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ABAQUS Tutorial and Assignment #1
1-1 ABAQUS Tutorial: Schedule & Proceedings
1-2 Learning ABAQUS: Begin with ABAQUS Command
1-3 Computer Assignment #1: Plate with circular hole
1-4 CAE Example: Having a sense of ABAQUS CAE
Attachment | Size |
1-1 ABAQUS tutorial.pdf | 55.71 KB |
1-2 Learning ABAQUS.pdf | 622.74 KB |
1-3 Computer Assignment 1.pdf | 923.39 KB |
1-4 CAE Example.pdf | 290.25 KB |
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agree with you Cream Pemutih
agree with you Cream Pemutih Wajah Yang Aman
Great resource
Certainly helped with our class!
She is expecting! Read her post on early signs of pregnancy and give us your support at funbaby
You are so nice, thank you!
abaqus tutorial 1
Cool, this kind of study material if shared ii good, I want to learn and improve my basics in non linear analysis, have any suggestion for me.
I want to learn the approach strategy for a fea problem, specially how the load is applied and boundary conditions, under which category this problem comes ect... please advise
Hello everyone,
When you create the model (for example a rectangle sample) in abaqus, I don't understand how you apply a crack and how you have a stress distribution in all the sample. Can somebody advise me ?
Thanks in advance.
I'm a student in the States
I'm a student in the States and I am needing an update tutorial site for abaqus. I've read throught this site, but a few of the sites I've looked at are 3 and 4 year old tutorials. I'm looking for help with engineering solids, for car and motorcycle parts . Any suggestions for a good tutorial would be helpful. Thanks
textbook FEA of Composite Materials Using Abaqus
Although emphasis is in orthotropic and laminated materials, you can use most of the book, including many examples, to learn Abaqus/CAE. Many users have said it helped learn Abaqus even though they were not that interested in Composites but somethig else. Model generation, elements to be use, an so on are common for all applications of Abaqus. Ch. 2 Intro to FEA. Ch. 3 Elasticity. Ch. 4 Buckling. Ch. 5 deals with 3D stress, Ch. 6. also 3D, Ch. 7. viscoelasticity, Chapters 8 and 9. damage, and Ch. 10. delaminations. There are many solved examples with pseudo-code that you can follow to do the examples in Abaqus/CAE.
abaqus training
I doubt the kind of learning that you need can be provided via comments here, and that you will get anything complete to your specific needs. It is better to apply to some training, either online or offline. A simple search results for abaqus training point to Simulia Services website. Here is a list of all available courses from them:
Hope this helps a bit... :)
ABAQUS modeling help.
Hi dear madam.
thank you for your usefull links.
i have a trouble modeling a linked beam-truss structure. can you help me through this?
ABAQUS modeling
Hi madam.
you seam to be very experienced. I have a problem modeling a simple reinforced concrete beam. can you help me?
thank you.
Abaqus Software
Hello madam ! Can you please send me the installer of Abaqus software? I want to learn about this softwar.,
Abaqus is a comercial package and its cost depends on where you intend to use e.g., Industry, University, Research centre etc. As far as I know, there is no way to legally get a trial version of this software for free. In any case you should consult Abaqus directly.
V. Hegadekatte, University of Karlsruhe, Germany
Student Version
There is a student version though which has some size limitations (less than 1000 nodes). You need a student card to request one.
need urgent help
dear all
I need help in my work i started to work with ABACUS and i suppose to work with shoulder data to review the reverse implant inside this shoulder.
i can not explain this very well but i need some expert in ABACUS to ask them what to do exactly or at least get me started.
Pleaseeeeeeeee i need an URGENT help......FROM ANY ONE.
please reply to me on: firstname.lastname@example.com
Thank you
Hyperelastic plate with circular hole
Hi Dear All,
I am Jamal, a PhD candidate from Cardiff University.
I try to model and validate an example of a hyperelastic plate with a circular hole problem.
The problem was demonstrated in a paper entitled 'FE formulation of the Ogden material model
with application to rubber like shells' by Y Basar and M. Itskov. Inter. Journal for Numerical
Methods in Engineering, 42, 1279-1305(1998).
I have modelled it in Abaqus 6.6.1 but the results seem not according to that journal paper.
Moreover, it's very difficult to get the results converged.
I have the journal paper and my abaqus results but I just don't know how to attach them here.
If anyone is interested to help me with this matter, I will e-mail the attachments.
Please write to: firstname.lastname@example.com.
Re: Hyperelastic plate with circular hole
You cannot attach a file to a comment. However, you can start a new post, and attatch a file with the post. You can then add a comment here and make a link to your post.
Re: Hyperelastic plate with circular hole
Dear Sir,
Thank you for your reply. However, I attempted to start a new post several times but failed to attach the files:
Remarks: "File attachment is disabled...."
Problem with file attachment has been fixed
Thank you for letting us know of the problem with attachment. This problem has been fixed now. You can attach a file with a post.
Blog entry posted
Dear All,
I have posted a blog entry entitled "Modelling Hyper-elastic Plate Using Abaqus" @ J Mahmud's blog. It describes my work on hyperlatic plate.
Thank you to everyone who has shown interest in my work.
J Mahmud
Dear Nanshu Lu Is it
Dear Nanshu Lu
Is it possible to solve crack propagation problem with ABAQUS CAE? (i. e. with Graphical user interface)
about simulating propagation of cracks in welded structures
Hello, IMechanica's mate, you mentioned cohesive zone model, i use this kind in my studies of initiation and propagation of cracks near a weld joints, i want to use ABAQUS to simulate these behaviours, please can you fit me in this field by giving me some advises. thanks
Hi,could you please give me
Hi,could you please give me an idea how to apply cyclic loads in abaqus??Material is aluminium,frequency - 5hz,No. of cycles- 25000,Max-Min loads : 25KN - 2KN??Been struggling to figure this out for a long time.
Analysis using Abaqus
Hi mam. My nameof is taj pursuing my masters in glasgow university. I am designing a product for a company which consist high density poly ehtylene and poly urithiene. I want to do load analysis on that product is it possible with abaqus. I dont know how to use abaqus can u plz guide me regarding this. Or any other software which you can recommend for this problem.
Thank you
regarding doubts in shell modelling and shell section in abaqus
hi this s arun from in IITMadras india,am doing shell modeling of aluminium plates in abaqus 6.9,want to give the values of continum shell section and attached the pic for your refernce.please help me..
1-4 CAE Example.pdf There
1-4 CAE Example.pdf There is this example in the abaqus help file also you can find more complex tutorial in the help file. I need simulation techniques about Self piercin rivets. Is there any body here who know self piercing rivets simulation in Abaqus...
Madam, i am a beginner with
Madam, i am a beginner with Abaqus and wanted to go with friction welding. Can you please suggest me some tutorials regarding this?
ABAQUS out put results
I have prepared FE model for crack growth analysis in ABAQUS. I want to know that how can we get out put results? e.g. CTOD or J- intergral values. I am getting LLD. Plz help me
CTOD evaluation
Hi vikas,
CTOD u can calculate using 45 degrees intercept concept by taking the displacements from FEM.
Can u please tell me how to get Load-line displacements..
Cohesive elemet propeties
Hi Sivakumar
I have found nodal displacement at loading points.
Can you tell me, how to select the cohesive element properties. The model which one prepared, I assume arbitary values of cohesive element properties. You can send me reply on my email as well. Its firstname.lastname@example.com
Regarding Abaqus tutorials
Could you send me fatigue crack growth analysis tutorials in Abaqus?
Thank you .
Thanks a lot Nanshu for ABAQUS tutorial. I am now learning ABAQUS by myself. If you have this type of more tutorials can you upload it specially truss elements?
thank you once again.
How to model Aluminium Metal Matrix Composites using ABAQUS CAE
Dear madam,
Iam a ressearch scholor from IITM,I would like to know procedure that,how one can model particulate metal matrix composites (wherein reinforces particles of different sizes,orients in different directions in the metal matrix) using either ABAQUS CAE or ANSYS.
I will be very greatful,if you provide this information.
Asking for help
Dear Nanshu Lu,
I am a new user of this software, now I have problems with modelling. I am doing research about pipe bends. So, if you have experiences about this please tell me. Thanks for your kind help
Best regards,
Hi MS. Lu,
I found this link very helpfull. however I have hard time following the steps in this example.
The 7th step "Running ABAQUS/POST" it required to run a file named EXCEED. I am using ABAQUS version 6-7 and I can not find the file. Would you help me on that manner.
Composite and Adhesive modelling in abaqus
i am arun and am doin my msc in astronautics at cranfield university,uk, and am using abaqus to simulate a single shear composite to metal bolted/bonded lap joint using solid elements for my thesis
could you please advise me on how to model composite laminates using solid elements?
could you also please advise me how to model the adhesive that joins the composite and metal substrates and what type contact conditions should i specify?
i will be most grateful if you could respond to my query, Thank you very much
Learning ABAQUS
I am a design engineer , I had many years with the modelling and I always want to learn ABAQUS ..thanks for the tutorial.
I am learning everyday
Thx very much
Thank you very much for sharing the tutorials. They are very useful for new users of Abaqus!
Thank you Lu,
Thank you very much for abaqus tutorials. It is very usefull for learnin abaqus.
I need Abaqus CAE tutorials for experiencing with students. I will so happy if any body give me tutorial adresses, or turorials for usage of "Abaqus CAE".
Especially thaks for Ku this tutorial. But any orther tutorails have got please share us. It is not important levels.
Gokhan Altintas.
Composite material
I am a brazilian student and I am learning Abaqus by myself, but Iam with some problems. I need to model a composite material but I have not had success. If anybody now Abaqus tutorial for composite material I will be very greatful.
comments: I don't write in English very well...
Fiber reinforced composites
Fiber reinforced composites Textile reinforced composites
Thank you for the share. Thanks. I plan to simulate the performance of the fiber or textile reinforced composites. How about Abaqus? Could some one give me some advice?
Thank you in advance.
Element Splitting
Hello Dear all.
I am working on project , encountering with one problem about how i can use element spilliting methode in abaqus whether with abaqus toolbars or with introducing subroutine
is any one can help me?
thanck you in advance
Hi guys..i'am an italian student. I'am studing the delamination problem of composite laminate material.someone cna help me? Please.
thank you in advance.
Visco-elastic material modeling
Hi guys
Is there any one who is busy with visco-elastic material modeling with ABAQUS? please let me know.
i AM DOING THAT BUT I AM A NOVICE IN THAT AREA!!!!
Coupled Temp-Disp, Laser Forming ?
I am a new user here, and I have two problems to use ABAQUS/CAE,
the first problem, I need some tutorials or helps to simulate a coupled temperature-displacement in ABAQUS/CAE !!
Best Regards
hello i am simulating a
i am simulating a coupled temperature-displacement of composite in ABAQUS/. does anybody have some experience on coupled temperature-displacement simulation of composite please do me a favor, and give me some suggestion.
Crack modelling in ABAQUS
Hai All,
Iam a research Scholar from IIT Madras,India working with ABAQUS. I need some tutorial kind of thing for modeling crack.
Please kindly suggest me the ways to follow to model a Crack in a 3D specimen. and is it possible to model surface cracks in shells using ABAQUS?
Hope someone will help
results fil
iam not getting *fil file after running analysis in abaqus cae ,due to this iam not able to do pre&post process in hypermesh,can u guide me on this regard
CAE doesn't create *.fil file
When you create any model in CAE, it does not create *.fil by default. If you want *.fil file after analysis, you need to enter (*NODE FILE) or (*ELEMENT FILE) line manually in your input file. You need to enter the node set or element set(whatever u want) in that line and data line will include the variables, you want to write in the *.fil file.
You can look at *Node File section in ABAQUS keywords manual if you need more details.
Good luck!!!
I want to define an special Behavior (Super-elastic ) for ABAQUS,and I tried to Link my UserMAterial routinr (UMAT) to the program but it doesn't identify my Fortran I don't know why? How can I do that
by the way is there anyone who had done kind of this job?
You should check the .log
You should check the .log file for additional information on linking errors.
Also, there is a specialized ABAQUS users' forum on www.eng-tips.com where you can get some extra help.
Have you checked if the right compiler and options are being used in
the environment file? Also, try to run your model with some standard
UMAT/VUMAT (as be the case) provided by abaqus. This might help you
narrow down the problem.
Did you config your environment correctly?
did you install fortran compiler and config the lib path and include path correctly? did you pass all the verification of abaqus?
Abaqus Help Forums
This is in no means meant to replace any discusion here, but I thought these links might help. They are ABAQUS forums where you can get questions answered.
The official site (ABAQUS answers, requires registration)
The most popular (as far as I know) forum for Abaqus users (unofficial):
Hope this helps, please share any other resources you may know of.
ABAQUS Yahoo group
There is also a yahoo group, might find it helpful.
Although, I think this is somehow related to the abaqus users group in www.nabble.com
ABAQUS 6.5 calculations
I have a question , Could I submit a calcul with tow user subroutine one DLOAD and one UMAT in the same time ? and how can i do that ?
Re:ABAQUS 6.5 calculations
Yes, you can. You should place both (all) user subroutines in the same subroutine file which you further need to supply when running the job.
Dear Madam, Thank
Dear Madam,
Thank you for the documents you have linked. I have a student version of abaqus and i effectively needed this type of document to understand a certain number of things. There are still options that are not obvious for me, but i think i am in the good way.
I was wondering if you had a tutorial concerning crack introduction in a 3-D sample. I would like to have a force representation in function of the mesh size. I don't know how hard a such representation is.
Once again, thank you for your help.
Best regards.
Abaqus Software
Hello ay body in this forum can send me the software about abaqus even the trial version or low version only . I want to study this software but I don't have any copy of the softeware..Please help..
Abaqus tutorial on
Dear Sir, I would like appreciate to provide me by a various types of abaqus tutorials that are related to dynamic simulation. My research field is in the erosive wear of matewrials. Thanks in davance .
Wear Simulation
Mr. Al-Bukhaiti,
Consult the abaqus documentation for a variety of tutorial problems. If you are working on a unix/linux system, then type "abaqus doc" on the command prompt to go to the documentation. Alternatively you can search on Google for "abaqus documentation" for a lot of links. I found the following link:
If you are interested in simulating wear using Abaqus, then you can refer to my papers/PhD thesis (http://vishwanath.hegadekatte.googlepages.com/curriculumvitae) which deals with wear of ceramic micro components. Also you will find there a review of the literature in this field. Most of my work is concerned with sliding wear, but may be useful for you.
V. Hegadekatte, University of Karlsruhe, Germany
about modelling in abaqus
i am a post graduate student. I am doing my project in FRICTION WELDING . I am in a situation to use ABAQUS in my project. So i need ur help me in create the finite element model
thank you
Abaqus User element
I am working on finite element formulation of thermopiezoelectric shell element. i want to incorporate the element in Abaqus software as a project work. i would like to know how to add the new element in abaqus.how can i add? Pls do help
explosion modelin
please help me for modeling explosive forming in abaqus
how can i model this metal forming process ( explosive forming ) in abaqus
abaqus basics
hi, my name is Paul I´m doing a masters degree in Civil engineering, it´s my first time to try finite element method in abaqus, use others softwares before, all the examples that i saw the help of the program are really complicated, could some send me a procedure o tutorial to do something like a a simple beam or a cantilever beam with four elements (1D, 2D Beams elements) whit one concentrated load and another distributed load, to really understand how the program works, I really y need your help, well, best regards for all of you and good bless you, take care.
sorry if i misspell something I´m from Bolivia a speaking Spanish country
Pd. E-mail: firstname.lastname@example.com
it is a piece of cake
Learning Abaqus is too easy, even easier than Ansys.
You can start with "Getting Started" section in it's help.
ABAQUS Software
Can anyone send me the abaqus software?
I don't have this software and I need it ....
abaqus software
As Mr. Hegkadette mentioned earlier:
"Abaqus is a comercial package and its cost depends on where you intend
to use e.g., Industry, University, Research centre etc. As far as I
know, there is no way to legally get a trial version of this software
for free. In any case you should consult Abaqus directly."
Gloria @ www.firsttime-homebuyer-loans.com
wear Simulation
I want to model Wear of rolls that occures in Roll-Forming process. I am doing this by Abaqus.
Who can give me some information about this matter?
Simulation of a rigid body impacting a fluid layer
I'am a French student, and I have to work on a student project with Ansys of which the aim is to know the pressure (during time) in a compressible fluid layer impacted by a cylindric rigid body having a constant velocity.
Do you know if it is possible to solve this problem with CFX/CFD Flotran, or if I have to explore an other way to solve my problem? Has somebody experience in this domain (impact, fluid), and could help me?
Thank you for your help.
How to convert a sketch to a part
I have a .DXF file drawn by AutoCad. I'm going to mesh it using Abaqus but I can't mesh it as it's not a part. Please guide me.
I do not think you can
Autocad is not feature based tool. Autocad image is conposed of lines (vectors) only.
composite structure
I am modelling composite structure consist of concrete slab on I-beam, I not sure how to define the 'contact' between surfaces of the sections. any good/simple example (*.inp or *.cae) that i could refer to? so that i will know how/when/where to apply the 'contact' function. please advice. thanks.
Cyclic displ. analysis(easy for experts,difficult for newbies)
Dear members of this community, as a very real newbie to ABAQUS, I would be glad to receive immediate response to this my very first post, if possible...
My subject is as follows:
A cantilever beam, left-end fixed, total length 3 meters.
Material: Steel, Elastic-perfectly plastic, Yield stress:240 MPa
Loading: Varying displacement at free end, node 167 (for example).
Displacement amplitudes:
Time---Magnitude as follows
0.0 --- 0
0.1 --- 1
0.2 --- 2
0.3 --- -3
0.4 --- -5
0.5 --- 2
can anybody provide help with
i)material modeling (cyclic plasticity)
ii)applying these displacements?
With all of my best regards,
Re: Reinforced concrete modeling
Dear madam,
how to model steel bar in concrete for abaqus/cae? Thank you.
Using ABAQUS for laser cutting simulation
I am research scholar and recently working on machining of FRP composites. I am in need to study laser cutting process using ABAQUS simulation for one of the problem. Can any one give me idea about how should i approached it with ABAQUS? Beause that will help me to reduce my plenty of time instead of walking in the dark room.
friction coefficient and slip rate
i try to solve stick-slip problem by abaqus 6.5-1, when i enter to interaction property manager and choose the penalty and toggole on slip rate, the table appear, but the my problem is that, abaqus didnt accept negative value under slip rate becuase just i press on ok that message apear for me (allowable slip rate must be greater than or equal to zero)
so the question is who can i enter negative value to slip rate (relativ velocity)table?
reg chip formation
hii yousif
can you tell me how to give interaction properties for chip formation using abaqus..
thanking you
piezoelectric beam static analysis in ABAQUS
R.Kadam Student IIT Delhi (INDIA)
can anybody tell me how to model piezoelectric composite beam in ABAQUS using plane stress element? which section should i creat? solid homogeneous or composite shell? if i creat composite shell section..problem is that it can be assigned to 2-d shell and if u creat solid homogeneous section i m not gettig correct results.
kindly plz help me out id firstname.lastname@example.com
thanking you.
Fracture analasys
Hi for everu one I am young in this area
so I need to do my master work for fracture mechanics in welds
So please help me about what software to use
Best regards
Fatigue Analysis in ABAQUS
I have got a little experience of working with ABAQUS
I have to carry out analysis of a fibre reinforced composite under tensile fatigue loading in order to simulate damage..
I have embedded Cohesive zone elements in the model for simulating delamination
Can anyone suggest me any material/tutorial that can help me start and how to to go about fatigue analysis in ABAQUS
HI I work about
I work about Modelling and digital simulation of the structures fissured under residual stresses, I have the problem to calculate the J-integral when I have in initial condition residuel stress, because Abaqus (6.5) define that
Initial stresses are not considered in the definition of contour integrals. Therefore, contour integral calculations for analyses including initial stresses in the regions used for the contour integral calculations will not be correct
I have many others problems see: Modelling and digital simulation of the structures fissured under residual stresses
Can you help me
help me about machining
hi everybody.
i want to work in simulation in machining.is it possible to anyone to send file about learning that and help me. i really need to do it but i am confiused and i dont know what is the start point? . thank you.
hi everybody. i want to
hi everybody.
i want to work in simulation of machining.is it possible to anyone to send a file about learning that and help me? I really need to do it because it is about my msc project.but i am confiused and i dont know what is the start point? . thank you.
Hi everyone
Is there some ABAQUS Tutorial for the UEL subroutine?
Thank you!
update on Tutorial for Abaqus UEL subroutine
I have recently begun work on developing my own user element in abaqus. It is not as easy as I thought it would be.
Have you had any luck finding any tutorial or other help on UEL subroutines since your post here?
Friction welding
Hi every one, i am a beginner with Abaqus. can we model friction welding process using Abaqus? If yes, can you please tell some introdution where to start with.
Modal Analysis
Hi, can anybody tell me how to do modal analysis in Abaqus?it is used to determine the mode shapes and natural freuquency in vibration analysis
Laminate composite
I wanna model a 3D composite cantilever beam. My model is 3D, but I use shell element for the section because composite is just defined by shell element. So I can't assignment this section to my model. I'm very glad if you could give me some advises.
Please try the solid
Please try the solid composite property in ABAQUS 6.7. It is designed for this problem.
Good luck in your research!
Kewei Li
Shanghai University
Using MATLAB functions/scripts in user interfaces in ABAQUS
Could anybody please let me know if it is possible to use MATLAB functions/scripts in ABAQUS user interface UMAT ?
Regards ,
Ph.D. Student
School of Mechanical and Materials Engineering
Washington State University, Pullman
Thanks for your excellent work,Mandam!
I love mechanics!
need help with ABACUS
hello Lu,
I do thank you for your tutorials. But as i have tried the CAE example and i just manged to let work i tried to do my own model by creating part and i wanted to divide it but i did not find any help neither in simuli or tutorial or any other source to guide me on what i want to do basically. I hope if you can help me by emailing me so i can ask you directly please.
thank you
can anyone tell me what are
can anyone tell me what are the differences between ANSYS and Abaqus?
Analysing a Horizontally curved Beam/girder
can tou tell me the way of analysing a horizontally curved beam by ABAQUS?
Great Work
Thanks nanshu lu.....for share tutorial with others....
Structural effects due to thermal influences (e.g. laser, FSW)
Hello to everyone
I am doing my PhD at the Technical University of Munich (Germany)
and I want to simulate the structural effects of work pieces due to the thermal influence
of manufacturing processes like laser-beam-welding, laser-beam-cutting or
friction-stir-welding. Unfortunately I am more or less a beginner in ABAQUS,
but perhaps you can give me an advice how to start (a special tutorial for
thermal problems) or if it's possible to simulate these kind of problems at all.
I would be deeply grateful for any help and
thanks a lot in advance
about FSW and LBW
Hi Mirko,
I think FSW is quite different from laser beam welding. Although both of them are joining process, the mechanism of FSW is far away from the traditional arc welding. So before your start, please decide which branch you should choose because both are not so easy to study. For FE simulation, I only carried out FEM calculation of arc welding, such as TIG, MIG and Laser. I highly recommend you to read Goldak's first paper of double eclipsoid welding pool model:COMPUTER MODELING OF HEAT-FLOW IN WELDS, METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY 17 : 587 1986. That paper is a classical work.Another review is also good: Modeling of fundamental phenomena in welds,T Zacharia / J M Vitek / J A Goldak / T A DebRoy / M Rappaz / H K D H Bhadeshia,Modelling and Simulation in Materials Science and Engineering,3 (2), p.265-288, Mar 1995.
I dont know if the newest version of ABAQUS provides the Goldak model or not. But another FE software MSC.MARC has already succeeded in implementation of Goldak model as GUI module. Anyway you can implement the model easily using subroutines.
FSW is still very difficult to model, because the FSW is not simply melt and solidification process. Dynamic recrystallization taks place dramatically in FSW. I think the FE simulation of FSW is much more difficult than arc welding.
I'm not sure what kind of problem you are interested in, but from what you described, I think your work may be related to residual stress/strain after welding or joining process. I think it is very challenging problem because of the highly nonlinear material properties and coupled phenomena. Good luck.
Best regards.
Dear Hi Mirko, I`m
Dear Hi Mirko,
I`m alireza, iread your post, I am working on simulation of arc welding process and I use ABAQUS software. if it is possible for you, please send me two following paper that you mentioned to those in your post:
Modeling of fundamental phenomena in
welds,T Zacharia / J M Vitek / J A Goldak / T A DebRoy / M Rappaz / H K
D H Bhadeshia,Modelling and Simulation in Materials Science and
Engineering,3 (2), p.265-288, Mar 1995.
my mail: firstname.lastname@example.com
Thanks and Best Regards.
Hi MS. Lu,
I found this link very helpfull.
eigenvalue , eigensolver , eigenfrequensy , eigenmode
Can every body explain me about "eigenvalue , eigensolver , eigenfrequensy , eigenmode"?
Thanks in Advanced
error about ABAQUS
Hi, everyone! tanks for your attention! I am using ABAQUS for module FSI, during analysis, I get the error information:
The ratio of deformation speed to wave speed exceeds 1.0000 in at least one element. This usually indicates an error with the
model definition. Additional diagnostic information may be found in
the message file.
Who knows the reason for that? and can be remedy? Thanks.
I m learning abaqus cn sumbody help me where to find tutorials to learn
Please am a complete novice with abaqus.i've read a couple oftutorial about it and it's not really going through.i need the room to supply me with free version of the software and some biginners tutorial. Ineed abqus for my future research work on friction composites.
Fono Tamo Romeo,
E-Mail:firstname.lastname@example.com,Dept of Mechanical Engineering,
Obafemi Awolowo University,
Ile-Ife, Nigeria.
Difference in FEA result and EXP result
I am sajib.donig my unedrgrad thesis "strenghtening beam in flexure in two point load" using ABAQUS 6.4.
I got results but the beam analysis shows more stiff behaviour...a lot more than exp results.
i used correct E value. for beam 200X300X3000mm i used mesh size 25X25X25 mm,used t3d2 as steel and shell elements as FRP layer.i modelled 1/4 th of the beam and took advantage of symmetry.i also used rigid element to to apply load in two rows.and supported the beam by restraing 3 line of nodes along width in DOF 2.
can any one suggest me where may be the problem?
thanking every one
drawing in yz plane
I am trying to make a shell model of a rectangular plate and need the part in the yz plane (I will eventually use the mesh coordinates, which need to be in the yz plane for another program). However I can't seem to draw in this plane, i can only do it in the xy plane which is the default? (The part has to be a 3D shell). Can anyone help? Thank you.
Please reply to: firstname.lastname@example.com
Thank you
Thank you very much for such a valuable resource
M.E. Design Engineering
BITS, Pilani
Thermal strains/stresses
Hi All -
I am new to Abaqus. Can anybody help me how to run a model in Abaqus to find out how the thermal strains/stresses are developed in metals during heat transfer.
- Gopi
explosive forming in abaqus
dear nanshu
i am a mechanical enginner and looking for someone who can teach me how i can model an explosive forming in abaqus.
it is very important for me.
so if u help me in this regard,i will help u in any regard that i could.
warning in abaqus
excuse,can you tell me how to handle the promble when i create an iteraction between two solid parts, and it cause the problem of hard to convergence.
the warning is:
Modelin Adhesive Force and Damage in Abaqus
Hi Dear All,
Could you please provide me with any document that helps me to model Adhesive Force and Damage in Abaqus?
Many thanks in advance for your kind consideration.
The best
Ahmad Khayer D.
Change SYSTEM UNITS
Hi all,
how i can change system units to" SI mm", I need modeling a part with dimension about 0.01 milimeter.
Many thanks
Abaqus don't use any unit,
Abaqus don't use any unit, there are global units, so if you use mm you should have consistents unit in every property that you input to the model..
different between Abaqus and Ansys
hello everybody
I want to know the different between Abqus and Ansynd witch one is good for simulate composite material
need for abaqus manual
I need a manual for abaqus/cae version 6.7 or 6.8.
thank you
I have prepared FE model
I have prepared FE model for crack growth analysis in ABAQUS. I want to know that how can we get out put results? e.g. CTOD or J- intergral values. I am getting LLD. Plz help me
Hi everyone I need
Hi everyone
I need your help to make simulation fo cutting process using Abaqus. can anyone send me a inp or py file of any type of cutting operation including remeshing technique.
thanks in advance
Tahsin T. Opoz University of Huddersfield UK
modeling of reinforced concrete cylindrical shell
Hello to everyoneI want to model a reinforced concrete cylindrical shell with abaqus using concrete damaged plasticity model. I want to model meridional and circumferential rebars in cylindrical shell in abaqus cae. I want to know which rebar geometry (angular or constant) I should use for modeling of both meridional and cirunferential rebars.Can I plot crack pattern for reinforced concrete shell in abaqus?please guide me
hii mam
i m vikas ....i m doing M. TECH at IIT in INDIA . i m beginer with abaqus & recently working on drilling of polymer matrix composite..... i have problem in simulation & modelling of dill n composite plate . so plz solve my problem ...... ? . how to make better result with help of any language like C n FORTRAN..... how to solved this kind of problem? ..... plz send me any model or tutorial then i started work....
hi every body
I am reza, student of civil engineering, marin structure in master's degree. nowdays I am invole in a simulation of piles and soil surrounded.I work with abaqus 6.7, and I've use3D elements for piles. I want to obtain the bending moments of the piles, but I don't know how I can get it.It's my pleasure if anybody help me.
best regard
plz help
hi again
I'm so sorry but I'm really envolved in that problem, it's my thesis and there is not enough time 4 me.
anyone can help me in computation of bending moment in 3D solid elements.
tanx in advance
Composite tutorial
Here is a composite model tutorial For abaqus or Ansys. Requires software by
Helius:MCT but its helpful still.
www.fireholetech.com/pdf/HeliusMCT-v2-Tutorial-1-Abaqus.pdf for abaqus
http://www.fireholetech.com/pdf/HeliusMCT-v2-Tutorial-2-Ansys.pdf for ansys
Contact/Impact Analysis Tutorials
Dear Nanshu Lu and All
I hope you are fine and am really impressed by the work you have done and are continue to do. I am currently working on Abaqus 6.9 and trying to solve a contact problem. I have completed few applications in Abaqus very simple ones that include stress analysis of beams and relative simple structures. But now that i have move to contact analysis, I am struggling to make contact between two simple bodies like a 2D model. I use a plate and place a block on top of it and try to make ineteration between the two but no luck
I was hoping if you or any one can help me in this regard with a simple contact analysis tutorial or guide me where i am worng i will really be grateful.
Also my email is
Many thanks
ALE in ABAUQS
Dear all,
Do you have any experience of using ALE mesh adaptivity in ABAQUS/Standard to prevent mesh distortion? Frankly, I doubt whether ALE mesh adaptivity is available in ABAQUS/Standard or not.
Any help would be appreciated.
Yousef A
In Abaqus/Standard ALE
In Abaqus/Standard ALE approach is not there. U can conform this from abaqus CAE users mannual.
What is the ideal data for tensile behaviour of modeling RC SLAB
Dear all....
Iam modelling and analysing a simply supported RC slab with ABAQUS CAE through Concrete Damaged Plasticity. The results show poor curve beyond the elastic region. The load vs central deflection graph shows very low curve at plastic region, which is far away when compared to experimental test result. I have tried many options for tensile behavior but still give poor results. I have modeled concrete material using C3D8R elements and T3D2 Truss elements for steel reinforcement which are embedded into concrete.
Please let me know what is the ideal data or equations or expression to relate the tensile behavior of RC Slab.
Please email me at email@example.com.
Many thanks for your help.
Dear all I am a masters
Dear all
I am a masters student, doing my thesis work in Buckling of thin films bonded to compliant substrates. I want to model and simulate the buckling pattern of thin films on substrate structure using abaqus.I will appreciate if any one can help me in this regard.
Best regards
Modeling Buckling of thin films/substrate using Abaqus
Dear all,
I am a masters student, doing my thesis work in Mechanics of thin films on compliant substrates.I want to model and simulate the buckling pattern of this bi layer structure using Abaqus. I will appreciate if any one help me in this regard.
Best regards
Tissue Cutting
Hi all,
I am looking forward for some help from your side.
I am currently working on Tissue Cutting using Cohesive Zone Modelling. I want to run that simulation in Abaqus. So I need some material to start with.
Can you help me?
Looking For Tutorial of ABAQUS (More Specific Aero Structure)
I am Graduate Student and looking for tutorial of ABAQUS based on aero-elasticity and aero structure.
plate buckling model
Hi All
I am a beginner in using abaqus, I am trying to model buckling of a plate but I recieve an error "TOO MANY ITERATIONS NEEDED TO SOLVE THE EIGENVALUE PROBLEM" , does any one has any comments? I really need help?
I wonder whether there is any question left on ABAQUS!!!?!!!
Acoustic Aanlysis with Abaqus
Dear all,
i hope you are well,
I want to know that how i can analyze acoustic and noise problems with abaqus? can someone recommend me a tutorial or document to start? or do you have any suggestion to work on other softwares?
Dear all. I hope you are
Dear all.
I hope you are well,
I want to know how i can analyze the acoustic and noise problems with
Abaqus? can anyone recommend me some valuable tutorials or documents to
start? or is there any superior software in order to work on these
Acoustic Aanlysis with Abaqus
Dear all.
I hope you are well,
I want to know how i can analyze the acoustic and noise problems with
Abaqus? can anyone recommend me some valuable tutorials or documents to
start? or is there any superior software in order to work on these
can anyone recommend me some
can anyone recommend me some valuable tutorials or documents to
start? or is there any superior software in order to work on these
Jim - metland rumah idaman investasi masa depan
New to Abaqus- Help required please
Hallo everyone,
I am Hygreeva doing my PhD first year on the hydride carcking in Zirconium alloys. I have to work on modeling and analysis of crack propagation in Zirconium alloys using X-FEM in abaqu. I am very very new in using analysis software. In this regard, I would like I would like to learn the software and model crack propagation problem.
Can some one please provide me the information on Tutorials, or websites.
I wish you a nice day.
Hygreeva K Namburi
thanks very much for your
thanks very much for your sharing.
urgent help....regarding doubts in shell modelling and shell sec
hi this s arun from in IITMadras india,am doing shell modeling of
aluminium plates in abaqus 6.9,want to give the values of continum
shell section and attached the pic for your refernce.please help me..
Hi dear prof. i am
Hi dear prof.
i am postgraduate student in mechanic course. i
want research about interaction between tire and soil for my thesis. now
i need toturial of this part in abaqus software. kindy send me this
file if you could aim me.
best regards
Request of tutorial
Hi dear Prof. Teng Li.
I'm postgraduate student in mechanic corse. I am working on my thesis about interaction between soil and tire simulation with Abaqus. kindly give me ABAQUS Tutorial about this part if Could you.
best Regards
Heat Exchanger analysis
I want to model and stimulte a borehole heat exchanger using ABAQUS.
But I am more or less a beginner in ABAQUS,
It will be really helpful if someone could give me a tutorial regarding a similar topic (heat transfer analysis) or give an advice on how to start with it.
I would be deeply grateful for any help.
thanks a lot in advance
tension/compression modulus problem in Abaqus
Hello I am trying to model a composite material with different tension and
compression modulus (elastic analysis). Does anyone know how to do it
Thanks for help.
help required for composite analysis
I want to model a 3D composite layer under coupled tem-displace step analysis. My model is 3D, and I use solid element for the section but I can't assignment material properity to my model. I'm very glad if you could give me some advises.
And does anybody have the document <<Analysis of composite materials with abaqus>>
best regards
Thanks a lot!~
Thank you for your excellent work!
flows & abaqus
Hi dear i know abaqus new and i like to know about power of flows abaqus thanks have a nice time
Hello.I want to put a cylinderical shell into another,but first cylinder's diameter is bigger.I dont know what type of contact must be selected,can you help me?
ABAQUS defines the
ABAQUS defines the viscoelastic properties also using a Prony series for
the shear and the volumetric response. It should therefore be possible
to convert the ABAQUS parameters to ANSYS format.
Abaqus errors
I have confronted to errors that I dont know how can I resolve theme, as follows:
The rigid bodies with the reference nodes contained in node set ErrNodeRefNodeNoRotInert have no rotary inertia associated with them and the rotational degree of freedom of the reference nodes is not restrained. Either rotary inertia must be defined at the reference node or the rotational degree of freedom of the reference nodes must be constrained. See the status file for further details.
The rigid bodies with the reference nodes contained in node set ErrNodeRefNodeNoMass have no mass associated with them and some degrees of freedom of the reference node are not restrained. Either mass must be defined or all of the translational degrees of freedom must be constrained. See the status file for further details.
could you please help me?
Thank you,
abaqus_ class_lecture_ movies
my first contribution
2} Class Lecture Movies
1] CST - Model Development
2] CST - Results Analysis
3] LST- Model Development and Analysis
4] Beam bending analysis using different elements including Q4, Q6, and Q8
Post-processing ideas for stress, displacement, XY-plots, etc.
5] Plates - Model development using different elements (STRI3, S4R5, S8R, S4)
6] Plates - Post-processing and analysis of results from models using different elements.
Modelling UHPFRC in Abaqus
/* Style Definitions */
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I'm trying to model a reinforced concrete beam using concrete
damage plasticity. I have conducted an experiment for both uniaxial tensile and
uniaixle compressive test. I have used
ABAQUS concrete damage plasticity. I have derived both Tension stiffening and Compression
hardening parameter but I have a problem with concrete compression damage and
concrete tension damage. I don't know how and what equations I should use and
how to derive the data.
I would really appreciate if anyone could help me.
2D and 3D metal cutting simulation in abaqus
Hi everyone,
i m working on 2D and 3D metal cutting simulations, i have run those simulations on LS-DYNA and AUTODYN ,can anydody please guide me to run these simulations in abaqus. i have been using abaqus for analysis. if anyone having tutorials or input file regarding simulations can send me at email@example.com
i shall be very thankfull.
Abaqus 6.10 student version for free!!
Dear all,
Simulia is offering the Abaqus student version for free. All you need to do is to open this Simulia website
and click Sign up for your DS Passport and log in now!
and provide the valid student id or proof and the software and complete the order. The succesful order will be available for download in 4 or 5 days.
Best Regards,
Ramgopal Balijepalli
Zhigang Suo is good!
Zhigang Suo is good!
hardening rule
Dear Lu
I am trying to conduct cyclic simulation of steel material. When I chose combined hardening model
with use parameter, I must input kinematic hardening parameter C1 and gamma1.
Could you explain how to get this parameter from uniaxial tensile test? Besise that at the subroutine cyclic loading
we must input the eqivalent stress and equivalent plastic strain. What are these parameter? If I am not wrong thsese parameters identic with
stress and stress from uniaxial test.?
thank you for your help
Abaqus e_learning
Hi every body;
I look forword help, how about e_learning for Abaqus ?
is there anywhere webinars and online interactive course of Abaqus
and thx for all
ZAOUI Noureddine
Electromechnical Engineer
can anyone help me in using abaqous in crack propagation?
installer of Abaqus software
Could you please send me the installer of Abaqus software? Thanks so much for kidney stones
evaluation of K and J integral for edge crack plate
Hello everyone,
When you create the plate in abaqus, I don't understand how you apply a crack and how you have a stress distribution in all the sample. Also how to calculate K and J integral. Can somebody advise me ?
Thanks in advance.
Umats with abaqus
Hi, I am a studen in civil engineering. I am trying to modelling some earth dams with abaqus, but I have a problem..I need to use subroutines for both materials clay and sand at the same time..How can I do this?..when I work only with one Umat, i don't have problem but when I use two umats the problems appears..anybody can help me?..
I check the manual, tutorials..etc but i can find anything of this..I hope your help
My mail is firstname.lastname@example.com, if someone want sent me information directly..
how to apply load on mesh
hi to all
how i can apply concentrated load normal to shell element (4sR) without partitioned it?
create a set of a defined reference point
Define a reference point at the desired location.
Make a set of the reference point.
Apply the load to this set.
cu fracture toughness
do any one know "Copper" fracture toughness?pure copper.please help me,Thanks
cu fracture toughness
do any one know "Copper" fracture toughness?pure copper.please help me,Thanks .
Assignment 1 - Stressing a plate with a circular or ell hole
Dear Nanshu Lu and all of abaqus user here,
hi everyone, Im new user here, after review the notes of nanshu Lu, i try assginment of stressing a plate with a circular or ellliptical hole and i had success to run the input file. but for question 2, the question is about modifying of the input file with using the *DLOAD comand, IST THE THE *DLOAD IS WRITE IN THE FORTRAN FILE AND RUN IN THE ABAQUS ANALYSIS? CAN I GET THE RESULT OF THIS QUESTION OR THE EXAMPLE OF INPUT FILE AND FILE SUBROUTINE THAT I REFER FOR BEGINNER.
Besides, my research is on the bone remodeling and i need to put the complex equation to analysis using the abaqus. so may i have the example such assignment of that with analysis one of the model with modfying the input with the some equation file subroutine..
Thank you very much...
I'm a student in the States
I'm a student in the States and I am needing an update tutorial site for abaqus. I've read throught this site, but a few of the sites I've looked at are 3 and 4 year old tutorials. I'm looking for help with engineering solids, for car and motorcycle parts . Any suggestions for a good tutorial would be helpful. colon cleanse Thanks
You are so nice, thank you!
You are so nice, thank you!
I want to know:
the problems of cracks, and their choice of propagation direction!
1) is there a method by XFM can calculate the integral J (KI and FIC ...)?
2) what are the procedure?
and thank you, my dear scholars?
i am running a
i am running a dynamic/explicit anlaysis with an
allocated memory of 8GB in 20 GB ram. after some time the
analysis got an error saying that
"Abaqus/Explicit was unable to allocate sufficient memory during the analysis. Please check the memory setting in the .env file or the memory usage in the .use file if files were available.You can use command "limit" or contact your system manager to increase the datasize for the analysis. If the problem could not be resolved, please report the issue to local office."
i am using 64 bit windows xp system. how can i get rid of this problem. which .env file has to find to make over this problem?
error correction
Dear Sriramk
It is not your computer problem.
it depends on your model that i guess it has compilicated mesh or geometry or bad surface interaction and etc.
check your model parameters specially your mesh type.
good luck
for any question visit our site
Non linear beam general section
Dear all
I am interested in using beam element in abaqus and define the stress
resultant- displacement nonlinear curve ( Axial-displacement,
Moment-curvature, torque-twist angle), could you please guid me , how i
can define these curves for beam behaviour?
It's my e-mail adress:
Your reply would appreciated in advance.
Regarding Fesafe
How to i use fesafe thorough abaqus for fatigue life assessment.plz guide me.
Thank you.
How to generate .fil file in abaqus?
I have to use .fil fileas for fe safe?But i don know how to generate .fil files ?
Plase help me if some one have ideas.
thank you.
Incremental core drilliing simulation
Hello ma'am,
I am Swapnil student of VJTI India, doing project in "Measuring stress relief in concrete due to Incremental core drilling". For this I have too model a column in which a core will be drilled in a structural element. I wanted to know how I can analyse a model which is continuously remain loaded during the coring process and will give results in terms of stress/strain at specific increment of coring procedure.
For. e.g column is loaded for a certain load and is having certain stress level, i'll remove a increment of 75 mm diameter of 5 mm thickness and see the effect on stress in column, i'll repeat this procedure for more number of increments successively in co relation with previously obtained results.
What type of procedure i need to employ for modelling ???
Thanks in advance.
crack modeling with abaqus
hi... every body
i ve modeled crack problem with ansys but i dont get good answer.now i want to model fracture problem of a multilayer bellows analysis that has crack with abaqus.
can any one help me how to start learing abaqus and model crack in it?
thanks alot.
Crack modelling with Abaqus
Hi Hodaj
Use can use XFEM. There is a tutorial that you can follow. Google "Matthew Pais XFEM"
I have modelled using XFEM but does anybody know how to model a crack using conventional FEM. I tried using contour integral but it does not work. When I try to create a crack using contour integral I have to select a crack front and tip, but cannot.
3d crack error
thanks for your good help
I modeled 2d crack and get answer but for 3d crack it gives error and no result.
i repeat it several times but i dont found the mistake.
can u help me?
Tutorials on modeling short fiber composites using ABAQUS code
iMechanica Group.
I trust all is well with all of us. I need the following help.
I am modelling viscoelatic-viscoplatic behaviour of a (natural) short-fiber composite, the materials being chemically modified sisal fiber within a polypropylene (thermoplastic) matrix. I have done creep experiments and have lots of data (e.g fiber tensile strength, modulus, interfacial shear strength values, polymer tensile strength, poissons ratio etc, etc) to serve s input to the model.
Can anybody please help with specific tutorials which would be an effective, easy example to follow, and exact to the nature of my research work.
I would greatly appreciate the help. You may use teh following two email addresses (1) email@example.com, or email@example.com
Cheers to all
Kind regards//
abaqus 6.12-3 can not start after install
I installed v6.12-3 on some 64bit Xp PCs for users, some PC it can start but some PC can not start.
I install again but it was not worked.
Any one same me, please show how to fix it.
Fatigue analysis in Abaqus using direct cyclic loading
i performing an analysis for fatigue life prediction in ABAQUS 6.10. But i m having some difficulties understanding the working of direct cyclic step. i dont understand that what are we supposed to write of increament size(initial?,minimum?,maximum?) do i need to know fouirier transformation? what is damage extrapolation constant?
can anybody help me out on these things?
any suggestion is appreciated.
modeling underwater explosion
I want to model underwater explosion in Abaqus. there is an example in abaqus help by the name of "9.1.3 Response of a submerged cylinder to an underwater explosion shock wave" which is very similar to what I'm trying to model. the problem is that i apply incident wave(planer/spherical/Undex) on the both structure and acoustic medium but i couldn't submit the model and it says " the model attributes wave formulation type must be set when using an incident wave interaction (Int-1 for example)"
I wolld appreciate it if anyone could help me with this. thanks.
Re: modeling underwater explosion
This is in response to your e-mail.
I have never used Abaqus to run this sort of simulation.
Also, I don't understand what you mean by "i apply incident wave(planer/spherical/Undex) on the both structure and acoustic medium".
I suggest you take your problem to your Abaqus customer support person. If you don't have customer support, you will have to be more detailed and explicit if you expect free help from people who are not working on exactly the same problem as you.
-- Biswajit
Need a job or project on ABAQUS AND Hypermesh to work on
Dear everybody,
I am looking for jobs or projects on ABAQUS AND Hypermesh to workon and explore my talent to excel in my career ahead. If anybody has any project kindly contact me at email@example.com
Thanks and Regards
everyone. My name is Alex, I'm a doctoral student at the University of
Salamanca. I am working with an axisymmetric model, steel material. I intend to
obtain the residual stresses produced
when hits on a major load model (Tera Pascals) for a very short time
(picoseconds). The constitutive model is working: Elastic isotropic, platic
johnson-cook, eos us-up. First work with
Abaqus Explicit Abaqus and then Standart (I import tensions), but Abaqus CAE /
Standart (version 6.13.2) does not allow plastic or Johnson-cook or EOS. To get
"the spring back and therefore residual stress.
could someone help?.
Nanotube modelling
Dear Colleagues
I want to start some research on the Carbon nano - tubes.
In the begining I need to model a CNT in the ABAQUS.
I wrote a code for generating the xyz Coordinates of the atoms in a CNT.
The problem is that I can not import them in abaqus.
Does anyone has an Idea ?
Required Tutorial by Students
This Tutorial is about student assignment help and it is
really best help for all academic levels. However students also take help from
online experts and other seniors.
Is Abaqus satisfied to be
Is Abaqus satisfied to be used for Soild-fluid interaction analysis?
impact velocity,high strain rate impact,
Dear all
I am Ali from iraq, I MSc student , I want learn instructions to simulate impact velocity,high strain rate impact (Hopkinson appearus) by abaqus prgram,Please can someone help me? thanks and regards
SHPB modeling
a few selected publications on SHPB modeling, available freely:
1) in the ABAQUS manual:
Getting Started with Abaqus: Keywords Edition
9.1 Types of problems suited for Abaqus/Explicit
Getting Started with Abaqus: Keywords Edition
9.4 Example: stress wave propagation in a bar
by Richard J. Deigan
Dissertation submitted to the Faculty of the Graduate School of the
University of Maryland, College Park, in partial fulfillment
of the requirements for the degree of
Doctorate of Philosophy
3) 2D Hopkinson bar simulation analysis
Al 6061-T6 specimens
A. Bouamoul
DRDC Valcartier
Defence R&D Canada – Valcartier
Technical Memorandum
DRDC Valcartier TM 2004-363
March 2006
4) Anthony D. Puckett:
Fidelity of a Finite Element Model
for Longitudinal Wave Propagation
in Thick Cylindrical Wave Guides
Los Alamos National Laboratory
5) Army Research Laboratory:
Numerical Hopkinson Bar Analysis: Uni-Axial Stress and
Planar Bar-Specimen Interface Conditions by Design
by Bazle A. Gama and John W. Gillespie, Jr.
ARL-CR-553 September 2004
prepared by
University of Delaware
Center for Composite Materials
Newark, DE 19716
under contract
6) BAM-Dissertationsreihe, Band 116
Dipl.-Phys. Hauke Gravenkamp
Numerical methods for the simulation of ultrasonic guided waves
7) find more on the Internet
Good luck
Thank you for sharing this
Thank you for sharing this tutorials!!!
Reread the input file.
Hi everybody!
Does anyone know how can I reread the input file during the analysis and/or how can I apply boundary conditions to a new set of nodes during the analysis but I dont know this nodes before the analysis starts. I will give the new set of nodes during the analysis.
Patrick Vieira
/* Style Definitions */
{mso-style-name:"Table Normal";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-fareast-font-family:"Times New Roman";
I research on buckling and postbuckling of a composite cylindrical shell with a cutout,but i do not know how define imperfection in abaqus.Can someone help me???
I research on buckling and postbuckling of a composite cylindrical shell with a cutout,but i do not know how define imperfection in abaqus.Can someone help me???
abaqus modeling of steel tubular x-joints under tensile loading
Hi all,
I have some problems in verification of my model. Can anybody help me?
Maximum and Minimum Initial stresses
Could you please help me to define maximum and minimum horizontal stress in ABAQUS??? As in situ stresses??
Hello dears
Hello dears
I need your help
How can i model the beam for torsion in Abaqus software?and also how can i design and model a beam by GFRP shell whit the Abaqus software
modelling cement sheath integrity during curing
dear all
-Can Abaqus model the cement integrity during the curing (I need to understand how the stresses are changing and what type of forces are excreting on the casing during the curing)
-What properties should be assigned to the interface (between casing and cement/ and between the formation and cementing)
Can Abaqus open a prepared mesh geometry? If so which formats?
Dear all
I have a question regarding the mesh geometry in ABAQUS.
Can Abaqus open a prepared mesh geometry (if so which formats? e.g. STL) or this should be defined inside Abaqus itself?


text:
The Supreme Court agreed Monday to decide the global reach of U.S. copyright law, in a case testing whether an overseas purchaser of a copyrighted work may resell it in the United States without the copyright holder's permission.
The justices will hear the case, which considers the "first-sale" doctrine, in its next term and is expected to set a nationwide standard. Federal circuit courts of appeal are split on the issue.
The first-sale doctrine generally allows the purchaser of any copyrighted work to re-sell or use the work in many ways without the copyright holder's permission. That's why used bookstores, libraries, GameStop, video rental stores and even eBay are all legal. But how the doctrine applies to foreign-purchased works — the so-called grey market — has been a matter of considerable debate.
In many ways, this is a battle for non-digital goods. Most digital goods, like software, e-books and MP3s — because of licensing or sandboxing — cannot be resold. However, a U.S. startup, ReDigi, is testing that theory when it comes to online music.
Meanwhile, the high court in 2010 said the first-sale doctrine did not apply to overseas purchases of copyrighted works which were imported for resale in the United States. The 4-4 ruling meant Costco could be liable for copyright infringement for selling foreign-made watches without the manufacturer's authorization. However, because there was no majority decision, the ruling did not set a nationwide precedent and solely affirmed a lower court's ruling.
Justice Elena Kagan was recused from the Costco case, as she had worked on it when she was solicitor general. She had urged the justices to side with Omega, the watchmaker. The government's position was that the "Copyright Act does not apply outside the United States." Costco had told the Supreme Court that the decision effectively urges U.S.-based manufacturers to flee the United States (PDF) to acquire complete control over distribution of their goods in the American market, arguments now being made in the latest case.
The case the justices decided to review Monday concerns textbook maker John Wiley & Sons and California entrepreneur Supap Kirtsaeng, who was reselling textbooks on eBay purchased overseas to U.S.-based students without the publisher's consent. The publisher sued, and a New York federal jury agreed with John Wiley & Sons' position that the first-sale doctrine did not apply, and awarded $600,000 in damages for copyright infringement.
A federal appeals court upheld the judgment. (PDF)

subset: commoncrawl


text: Scalp recovery is specially designed for scalp-related problems, including seborrheic dermatitis and dandruff. It provides moisture balance to dry, itchy scalp and dry hair, eliminating irritation and flaking. Scalp Recovery Medicating Cleanser - An anti-dandruff shampoo with dermatologist-tested active ingredients to cleanse the scalp and reduce hair loss associated with itching.


text:
See Hilarious T-Ball Bloopers
Even superstars like Albert Pujols had to start out somewhere, and for most kids who play baseball, that starting point is T-ball.
It's a pretty simple routine, really: you place the ball on the tee, then the kid steps up with his bat and tries to give it a smack. But any adult who has watched a group of youngsters try to do this know that things hardly ever go smoothly. And it's not always the kid who ends up looking foolish.


text:
În mai 2009, am avut plăcerea deosebită să fiu invitat la eLiberatica, întâlnirea anuală dedicată Software-ului Liber în România. Amabilii organizatorii ai acestei conferințe - o întâlnire care se ridică la cote de pasiune intelectuală ce ating efervescența, greu de egalat la noi în țară - sunt Agora Media și dl. Lucian Savluc.
La eLiberatica 2009, publicul a putut urmări și o prezentare video trimisă special de Richard M. Stallman, președintele și fondatorul Free Software Foundation. Pentru cei interesați, iată aici textul acestei prezentări, pe care sper să v-o pot oferi, cu altă ocazie, și în varianta tradusă în românește.
Licența materialului este Creative Commons 3; transcrierea de pe video a fost realizată de mine.
Richard M. Stallman: Video Presentation at eLiberatica 2009 Free Software Conference - Bucharest, Romania
Please see video (4 parts) at http://www.youtube.com/view_play_list?p=F76DCDADA970F6B0
Part 1: http://www.youtube.com/watch?v=FbvUG9zvVjw
Who controls your
computer? Forty years ago people used to be very worried that
computers would take over the world. They were very afraid but now we
know that computers do what people tell them to do - and nothing
else. Which people tell your computer what to do? Is your computer
doing what you tell it to do or is it doing what Microsoft tells it
to do? If you're running Windows, it's Microsoft that really tells
your computer what to do. But if you're using MacOS, then it's Apple
that really tells your computer what to do. Or maybe some of the time
it's Adobe that tells your computer what to do. Or a bunch of other
companies that make proprietary software. Because if you are using
proprietary software on your computer, that means the program's
developer controls what it does and you, the user, don't. And that's
why it's vital to use Free Software, "free" as in "freedom".
Free Software means software that respects the users' freedom and the
social solidarity of the users' community. So, it's "free" as in
"freedom" , not as in price: think of "free speech", not
"free beer" if you want to understand the word "free" when it
appears in the combination "Free Sofware". Free Software
respects the user's freedom, but proprietary software keeps the users
divided and helpless. Divided, because they're forbidden to share it;
and helpless, because they don't have the source code, so they can't
change it, they can't even independently check what it's really doing
to them – and, often, it does something rather nasty. However, what
I've said is rather general: software should respect your freedom:
what exactly this that mean? I need to say something more specific.
A program is Free Software if you, the user, have the four essential
freedoms. Freedom 0 is the freedom to run the program as you wish.
Freedom 1 is the freedom to study the source code and then change it
to make the program do what you wish. Freedom 2 is the freedom to
help your neighbour – that's the freedom to make and distribute
exact copies of the program to others, when you wish. And Freedom 3
is the freedom to contribute to your community: that's the freedom to
distribute copies of your modified versions, when you wish. If the
program gives you all four of the essential freedoms, than it's Free
Software, which means that the social system of its distribution and
use is ethical, because it respects the users' freedom and the users
community. But, if one of these freedoms is missing or insufficient,
then the program is proprietary software, users subjugating software,
because the social system of its distribution and use puts the
developer in a position of power over the users, which means it
doesn't respect their freedom: the users of that program are not
fully in control of what it does. Thus, to develop a free program and
make it available to others is a contribution to society – how much
of a contribution, that depends of all the details, but, at least is
being offered to society in an ethical way. But, when a program is
proprietary software, its use is a social problem. If the program has
attractive features, those are the bait for the trap: they attract
users to give up their freedom and become users of this program –
and, really, that shouldn't happen, it shouldn't be done at all. The
aim of the Free Software Movement is to put an end to this social
problem: all software should be free, so that all users can be free.
But why are these four freedoms essential? Why define Free Software
this way? Each of these freedoms is essential for a reason. Freedom
2, the freedom to help your neighbour, is essential on fundamental
moral grounds, so that you can lead an upright ethical life, as a
good member of your community. If you use a
program that does not give you Freedom no. 2, the freedom to
redistribute exact copies when you wish, then you are in danger of
falling into a moral dilemma. At any moment, whenever your friend
says: "This program is nice, could I have a copy?", at that
moment you would face a choice between two evils. One evil is to give
your friend a copy and violate the license of the program; the other
evil is to deny your friend a copy and comply with the license of the
program. If you're in the dilemma, you ought to choose the lesser
evil which is to give your friend a copy and violate the license of
the program. What makes this evil the lesser evil? Well, if you can't
avoid doing wrong to somebody or other, it's better to do wrong to
the one who deserves it: the developer of the program. You see, we
can assume that your friend is a good friend and a good member of
your community and normally deserves your cooperation. By contrast,
the developer of this proprietary program has deliberately attacked
the social solidarity of your community. So, if you're stucked doing
wrong either to your friend or the developer, do it to the developer.
But, being the lesser evil, this not mean it's good. It's never a
good thing to make an agreement and break it – not even in cases
like this, where the agreement is inherently evil and keeping it is
worse than breaking it; still, breaking it is not good. And, if you
give your friend a copy, what would she have? She would have an
unauthorised copy of a proprietary program - and that's something
rather nasty, almost as nasty as an authorised copy would be.
So, once you have fully
understood this dilemma, what should you really do? What you should
do is make sure you are never in this dilemma. I know of two ways to
do that. One is: don't have any friends. That's the method implicitly
suggested by the proprietary software developers. The other method
is: reject proprietary software! If you don't have the program, you
don't have to worry what you will do if your friend asks for a copy
from you. That is my method. If someone offers me an attractive,
convenient program on the condition I promise not to share with other
people, I say "No", I say "My conscience will not allow me to
accept such a condition". And that's you should say, too. And you
should also reject the propaganda terms that the proprietary software
developers use to demonize the act of cooperation - terms like
"pirate". When they compare people who share software with
pirates, what are they really saying? They're saying that helping
your neighbour is the moral equivalent of attacking a ship. Morally
speaking, nothing could be more wrong than that, because attacking
ships is very bad, but helping your friends and your neighbours is
good. So, don't call it "piracy". When they call it "piracy",
say "No". When people ask me what do I think of "piracy", I
say "Attacking ships is very bad". And when they ask me what I
think of "software piracy" or "music piracy" I say "As far
as I know, pirates don't attack using computers or by playing musical
instruments badly, they use arms". Don't fall into the trap of
repeating the enemy's propaganda.
So, that's the reason for
Freedom 2, the freedom to help your neighbour, the freedom to
redistribute exact copies of the program when you wish. Freedom 0,
the freedom to run the program as you wish is essential for a
different reason, so you can control your computing. It may be
surprising, but there are proprietary programs that restrict even how
people, the authorised users, use the authorised copies. That's
obviously not having control of your computing! So Freedom 0 is
essential, but it's not enough, because that just means you can
either do or not do whatever the code of the program is set up to
permit, and it's the developer who decides that, so the developer
still controls you. Not through the license, but instead through the
code of the program, but it comes to the same thing. So, in order to
control your computing, you also need Freedom 1, which is the freedom
to study the source code and then change it, to make the program do
what you wish – this way, you decide what your computing is gonna
be, instead of letting the developer decide and impose his decisions
on you. Now, if you use a program without Freedom 1, you can't even
tell what it's doing: many of these programs have malicious features,
to do things like spy on the user, restrict the user, even attack the
user. One proprietary program you may of heard of, that does all
three, is called Microsoft Windows: we know of features to spy on the
user, we know of Digital Restrictions Management or DRM features,
designed to restrict users and we know of a backdoor that enables
Microsoft to attack the user; in fact, this backdoor is so gaping
that Microsoft has total control over the user, because Microsoft can
forcibly change the software at any time, without asking the user's
permission. So that user may think he controls his computer, but,
really, Microsoft has total power!
But, please don't think
that Microsoft is uniquely evil and only Microsoft would do this. In
fact, MacOS X is pretty much the same: we know of features to
restrict the user - Digital Restrictions Management – and there is
a backdoor which allows Apple to forcibly change the software in any
way, at any time, without asking the user's permission. So it's just
as bad, there's nothing to choose from between them.
And this appears to be
the natural endpoint of proprietary software: many cellphones are set
up the same way. There is a company that can change the software
whenever it wishes and the user who supposedly owns the cellphone has
nothing to say about it. What it's happening here is: proprietary
software is a system that gives the developer unjust power over the
users. Now, when someone greedy has unjust power over others, what is
he going to do with this power? He's gonna use it to try to get more
power, more and more, until he has total power. And that's what
they've done! Several different companies, in parallel. So, this is
what proprietary software tends to lead to: total power, not just
power that they shouldn't have.
Now, I won't claim that
all the developers of proprietary software put in malicious features:
I suppose some do and some don't. But, when a program doesn't give
you Freedom no. 1, there is no way to tell if it has malicious
features - in general. Once in a while we discover some, but, there
are many programs in which we don't know of any malicious features.
But maybe they have them or maybe they don't: we can't identify among
all the programs without Freedom 1, we can't identify any that
certainly have no malicious features – cause there's no way to
check! But I presume they are some. The problem is: you never know
if the program you're using is one of them! But, even, know, we can
identify those programs, I can make a statement about them all: their
developers are humans, so they make mistakes. And the code of those
programs has bugs, and a user of a program without Freedom 1 is just
as helpless facing an accidental bug as facing an intentional
malicious feature. If you use a program without Freedom 1, you are a
prisoner of the software you use.
We, the developers of
Free Software, are humans too, so we also make mistakes and the code
of our free programs has bugs. But, if you encounter a bug in our
code – or anything you don't like – you are free to change it,
cause we didn't make you a prisoner. We can't be perfect, we can
respect your freedom. Thus, Freedom 1 is essential, but it's not
enough, because that's the freedom to personally study and change the
source code. What if you're one of those millions of users that don't
know how to program? Than you can't study and change the source code
yourself; but even for programmers like me, Freedom 1 is not enough,
because there is so much Free Software in the world that nobody is
capable of studying and mastering all the source code and personally
making all the changes that she may want - because that is more work
than any one human being can do. So the only way we can fully have
control of our computing is to do it working together, cooperating –
and for that we need Freedom 3, the freedom to contribute to your
community, the freedom to distribute copies of your modified
versions, when you wish. This allows people to cooperate. Here's an
example: suppose a few people release a free program and a lot of us
use it because we like it, but we wish it has certain additional
features; or someone can start with this version, add some of those
features and release his modified version; and someone else can start
with that, add some more features and release her modified version;
and then a few people can start with that, add the rest of these
features and release their modified version; and then we'll have
those features and we'll say "Thank you for cooperating to make
these improvements".
And thus, when we have
all four freedoms, we, the users, are in control of our own computing
lives. Now, all the users get the benefit of the four freedoms. Every
user can directly exercise Freedoms 0 and 2, the freedom to run the
program as you wish and freedom to redistribute exact copies, because
these don't require programming: anybody who can use the program can
figure out how to do these things and they do them. Freedoms 1 and 3,
the freedom to study and change the source code and then optionally
distribute copies of your modified versions, these entail
programming, so not everybody knows how to do them. And so there are
people who can directly exercise these freedoms. But, when others,
the programmers, exercise these freedoms and when they publish their
modified versions, all the rest of us can then install those modified
versions or not, as we prefer. So we all receive the benefits of
living in a society where people have the four freedoms, even when we
don't exercise them directly. In addition, those who don't know how
to program and can't directly exercise Freedoms 1 and 3, can
indirectly take advantage of them. Suppose that you run a business
which uses computers, as most businesses do, but supppose that you
don't know anything about programming, cause your business is in some
other field. Most businesses are not in the software field: they use
computers, but they use them to do other things. Well, if you
recognise that, supposing a program were changed, your business would
run more efficiently and you'd make more money, it would be worth it
to you to pay a programmer to implement that change, if the price is
right. So, if it's Free Software, you can look around for a
programmer who's willing to undertake the changes you want, or some
fraction of them, for a price you think it's suitable. Then you
exercise your Freedom no. 2 to give that programmer an exact copy of
the version that you are using. Then that programmer exercises his
Freedom 1, studying the source code of that version and changing it
to implement the changes you wanted. And then, he exercises his
Freedom no. 3, to give you a copy of his modified version. An then,
assumming it works, you pay him for this work.
So, in this scenario, you
use the fact that other users have Freedoms 1 and 3, you pay them to
exercise those freedoms for you, and so you get the benefit. An
important part of Free Software business works this way, and this is
why Free Software is a tremenduos benefit to all businesses that use
computers: they deserve the four freedoms, just as individuals in
their non-commercial lives deserve the four freedoms, just as every
user deserves the four freedoms.
And the end, combined
result of the four freedoms is democracy. A free program develops
democratically, under the control of its users. Because all the users
can participate as much as they wish in the social decision about the
future of this program, which is simply the sum total of all the
individual decisions that people make about what to do with the
program. By contrast, a proprietary program develops under the
dictatorship of its developer, the autocracy of its developer, who
uses that program as an instrument to impose his power on users who
he can then bully, command and mistreat – and exploit. So, on one
hand we have individual freedom, social solidarity and democracy; on
the other, we have a dictatorship. Society must choose Free Software
and reject proprietary software. There is no excuse for anyone to
have the unjust power that proprietary software gives to its
developer. You shouldn't let anyone have that kind of power over you,
so you need to reject proprietary software. But society also should
reject it.
The aim of the Free
Sofware movement is the liberation of the cyberspace and all his
inhabitants – we should all have freedom!
This is why, in 1983, I
announced the plan to develop the GNU Operating System. It wasn't
just that I've felt like developing an operating system; of course, I
knew any programming project would be fun if I succeded in doing it,
but that's not what it was about – the reason was for freedom.
Because, at the time, it was impossible to use a computer and have
freedom. Because a computer won't run without an operating system and
all the operating systems for the modern computers of the day were
proprietary, so there was no way to buy an new computer and run it
and have freedom. You always had to install a proprietary operating
system and that meant giving up your freedom. So, how can I change
that? I didn't think I could change it by organizing a protest
movement, because too few people agreed with me. So, instead, I had
the idea that I could change the situation by developing another
operating system and I stood a chance of succeding at that because
operating system development was my field; and then, being the
author, I could legally make it free, giving all users freedom and
then, everybody will be able to use their computers in freedom with
the system I would write. So, I decided to invite other people to
join in the development to make it Free Software... [sorry]... to get
it done sooner and... [I guess I should take that over]... I decided
to invite others to join in the development to get it finished
sooner, I decided to follow the design of Unix so that it would be a
portable system, capable of running on various different kinds of
computers, cause I knew that in five or ten years computers would be
different, I wanted the system to continue to be capable of running
on future computers. And then I decided to make it compatible with
Unix, so that the many users of Unix would find it easy to switch.
And then I gave it the name GNU, as a joke, because GNU it's a
recursive acronym: it stands for "GNU's Not Unix". Now, this
follows a custom among certain programmers and community which I
belong to, that when you had to write a new program similar to some
existing program, a humorous way of giving credit to the older
program was you could give your program a name which is a recursive
acronym saying that your program is not the other one. So, I've
followed that tradition, especially since it gave me the opportunity
to use the funniest word in the English language as the name. The
reason this word is so full of humour is because, according to the
dictionary, the G is silent and is pronounced " 'NU " ("new"),
so any time you wanted to write the word "GNU", you can spell it
"G.N.U" and you've got a joke – maybe not a very good joke, but
there are lots of them. However, when it's the name of our system,
please do not follow the dictionary: if you talk about the "New"
Operating System, you'll get people confused. You see, we've been
working on it for 25 years now, so it's not new anymore, but it still
is GNU. And it will be always be GNU, even if some people make the
mistake of calling it Linux. But how that strange error get started?
Well, what happened was, in 1990, we had almost all of the system but
one important piece was missing, so the Free Software Foundation
hired somebody to write that piece. That piece is called the kernel:
it's the program that allocates the computer's resources to the other
programs that it run. Well, our kernel project took a long time, it
sort of runs but it doesn't works very well, so we don't use it. And
someone else wrote a kernel, in 1991, and it released it under the
name "Linux". Initially, it was not Free Software, but in 1992 he
changed the license and he made it Free Software; so, at that point,
the combination of the almost complete GNU system and Linux, this one
other program, made a complete free operating system. And this is
what made it possible, for the first time, to buy a PC and use it in
freedom by installing a complete free operating system – a system
which is basically the GNU system but which also contains this
program, Linux. So, if you call it "GNU/Linux" or "GNU+Linux"
you give credit to the people who started the development, as well as
to the person who developed the last piece that finished it.
Today, tens of millions
of people run the GNU/Linux system, maybe more than a hundred
million. Unfortunately, that's still a small fraction of computer
users and, even worse, most of those people still use some
proprietary programs, so they have not completely attained freedom.
Nearly all of the hundreds of distributions of GNU/Linux contain
proprietary programs or install proprietary programs or stirr users
toward proprietary programs, which means that they're not entirely
ethical. So on gnu.org or fsf.org
you can find the list of the few GNU/Linux distributions which are
entirely free, which don't recommend the people give up their
freedom. If you value freedom, you need to use one of them; but,
above all, if you you value freedom, you need to teach other people
to value freedom. Because if they are few of us and we try to fight
to defend our freedom, our chances of winning are smaller, but if we
teach other people to appreciate freedom also and they join in, our
chances are greater. This is why I don't participate in advocating
Open Source. You see, Open Source is basically a way of talking about
Free Software, but hushing up the issue of freedom. The people who
chose to start saying "Open Source" in 1998 were the people in
the Free Software community that didn't want to raise this question
at all: somehow, it made them feel unconfortable or they thought they
would make other people feel unconfortable or, some of them, wanted
to distribute proprietary software and they didn't want their
potential customers to see any reason to say "No" to it. So, for
their various reasons, they chose to forget about freedom, they chose
to construct a different discourse but never raise this issue. Well,
if people develop Free Software for those motives, their contribution
is still good; but, in the long term, our future depends above all on
what we value. If we value freedom, we will make an effort to gain
freedom and to hold on to our freedom; if we don't know what freedom
means, if we've never even heard the concept, we're not likely to
make that effort. So, I came to the conclusion that there's simply no
use in promoting Open Source, it was a distraction, because it failed
to mention the most important point. That's why I give speeches like
this, talking about Free Software. I hope you'll join me in spreading
the ideas of Free Software; for more information, look at gnu.org
and fsf.org. We also have sister
organizations, FSF Europe, which is at fsfeurope.org,
FSF Latin America, which is at fsfla.org
and FSF India, which is at gnu.org.in.
Thank you very much!


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Ask the Missionaries! They Can Help You!
All missionaries, younger and older, serve with the sole hope of making life better for other people.
My beloved brothers, sisters, and friends, we extend our love and greetings to each of you. We are thrilled with President Thomas S. Monson's announcement this morning, which adjusts the minimum age for missionary service to 18 for young men and 19 for young women. Through this option, more of our youth may enjoy the blessings of a mission.
Two years ago and powerfully reaffirmed again this morning, President Monson declared "that every worthy, able young man should prepare to serve a mission. Missionary service is a priesthood duty—an obligation the Lord expects of us who have been given so very much."1 Again he explained that for young sisters, a mission is a welcome option but not a responsibility. And again he invited many more mature couples to serve.
Preparation for a mission is important. A mission is a voluntary act of service to God and humankind. Missionaries support that privilege with their personal savings. Parents, families, friends, and donors to the General Missionary Fund may also assist. All missionaries, younger and older, serve with the sole hope of making life better for other people.
The decision to serve a mission will shape the spiritual destiny of the missionary, his or her spouse, and their posterity for generations to come. A desire to serve is a natural outcome of one's conversion, worthiness, and preparation.
In this great worldwide audience, many of you are not affiliated with The Church of Jesus Christ of Latter-day Saints and know very little about us and our missionaries. You are here or tuned in because you want to know more about the Mormons and what our missionaries teach. As you learn more about us, you will find that we share many of the same values. We encourage you to keep all that is good and true and then see if we can add more. In this world filled with challenges, we do need help from time to time. Religion, eternal truth, and our missionaries are vital parts of that help.
Our young missionaries set aside their education, occupation, dating, and whatever else young adults would typically be doing at this stage of life. For 18 to 24 months they put it all on hold because of their deep desire to serve the Lord.2 And some of our missionaries serve in their more mature years of life. I know their families are blessed. In our own family, eight are currently serving as full-time missionaries—three daughters, their husbands, one granddaughter, and one grandson.
Some of you may wonder about the name Mormon. It is a nickname for us. It is not our real name, though we are widely known as Mormons. The term is derived from a book of sacred scripture known as the Book of Mormon.
The true name of the Church is The Church of Jesus Christ of Latter-day Saints. It is the reestablished original Church of Jesus Christ. When He walked upon the earth, He organized His Church. He called Apostles, Seventies, and other leaders to whom He gave priesthood authority to act in His name.3 After Christ and His Apostles passed away, men changed the ordinances and doctrine. The original Church and the priesthood were lost. After the Dark Ages, and under the direction of Heavenly Father, Jesus Christ brought back His Church. Now it lives again, restored and functioning under His divine direction.4
We follow the Lord Jesus Christ and teach of Him. We know that after His glorious triumph over death, the resurrected Lord appeared to His disciples on numerous occasions. He ate with them. He walked with them. Before His final Ascension, He commissioned them to "go … and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost."5 The Apostles heeded that instruction. They also called upon others to help them fulfill the Lord's command.
Today, under the direction of modern apostles and prophets, that same charge has been extended to missionaries of The Church of Jesus Christ of Latter-day Saints. These missionaries serve in more than 150 nations. As representatives of the Lord Jesus Christ, they strive to fulfill that divine command—renewed in our day by the Lord Himself—to take the fulness of the gospel abroad and bless the lives of people everywhere.6
Missionaries in their late teens or early 20s are young in ways of the world. But they are blessed with gifts—such as the power of the Holy Spirit, the love of God, and testimonies of the truth—that make them powerful ambassadors of the Lord. They share the good news of the gospel that will bring true joy and everlasting happiness to all who heed their message. And in many instances they do so in a country and a language foreign to them.
Missionaries strive to follow Jesus Christ in both word and deed. They preach of Jesus Christ and of His Atonement.7 They teach of the literal Restoration of Christ's ancient Church through the Lord's first latter-day prophet, Joseph Smith.
You may have previously encountered, or even ignored, our missionaries. My hope is that you will not fear them but learn from them. They can be a heaven-sent resource to you.
That happened to Jerry, a Protestant gentleman in his mid-60s who lives in Mesa, Arizona. Jerry's father was a Baptist minister; his mother, a Methodist minister. One day Jerry's close friend Pricilla shared with him the pain she felt from the death of her child during childbirth and a bitter divorce that occurred shortly thereafter. Struggling as a single mother, Pricilla has four children—three daughters and a son. As she opened her heart to Jerry, she confessed that she was thinking of taking her own life. With all the strength and love Jerry could muster, he tried to help her understand that her life had value. He invited her to attend his church, but Pricilla explained that she had given up on God.
Jerry did not know what to do. Later, while watering trees in his yard, this man of faith prayed to God for guidance. As he prayed, he heard a voice in his mind saying, "Stop the boys on the bikes." Jerry, a little bewildered, wondered what this meant. As he reflected on this impression, he gazed up the street and saw two young men in white shirts and ties riding bicycles toward his home. Stunned by this "coincidence," he watched them ride by. Then, realizing that the situation required him to act, he shouted out, "Hey, you, please stop! I need to talk to you!"
With a puzzled but excited look, the young men stopped. As they approached, Jerry noticed that they wore name tags identifying them as missionaries in The Church of Jesus Christ of Latter-day Saints. Jerry looked at them and said, "This may sound a little weird, but I was praying and was told to 'stop the boys on the bikes.' I looked up the street, and here you are. Can you help me?"
The missionaries smiled, and one said, "Yes, I am sure we can."
Jerry explained the worrisome plight of Pricilla. Soon the missionaries were meeting with Pricilla, her children, and Jerry. They discussed the purpose of life and God's eternal plan for them. Jerry, Pricilla, and her children grew in faith through sincere prayer, their study of the Book of Mormon, and the loving fellowship with members of the Church. Jerry's already strong faith in Jesus Christ grew even stronger. Pricilla's doubts and thoughts of suicide turned to hope and happiness. They were baptized and became members of Christ's restored Church.8
Yes, missionaries can help in many ways. For example, some of you might want to know more about your ancestors. You may know the names of your parents and your four grandparents, but what about your eight great-grandparents? Do you know their names? Would you like to know more about them? Ask the missionaries! They can help you!9 They have ready access to the vast family history records of The Church of Jesus Christ of Latter-day Saints.
Some of you are members but not presently participating. You love the Lord and often think of returning to His fold. But you don't know how to start. I suggest that you ask the missionaries!10 They can help you! They can also help by teaching your loved ones. We and the missionaries love you and desire to bring joy and the light of the gospel back into your lives.
Some of you may want to know how to conquer an addiction or live longer and enjoy better health. Ask the missionaries! They can help you! Independent studies have shown that, as a group, members of The Church of Jesus Christ of Latter-day Saints are a healthy lot. Their death rates are among the lowest and their longevity greater than any yet reported in any well-defined group studied over a lengthy period of time in the United States.11
Some of you may feel that life is busy and frenetic, yet down deep in your heart you feel a gnawing emptiness, without direction or purpose. Ask the missionaries! They can help you! They can help you to learn more about the true purpose of life—why you are here on earth and where you are going after death. You can learn how the restored gospel of Jesus Christ will bless your life beyond anything you can presently even imagine.
If you have concerns about your family, ask the missionaries! They can help you! Strengthening marriages and families is of utmost importance to Latter-day Saints. Families can be together forever. Ask the missionaries to teach you how this is possible for your family.
Missionaries can also help you with your desire for greater knowledge. The human spirit yearns for enlightenment. Whether truth comes from a scientific laboratory or by revelation from God, we seek it! The glory of God indeed is intelligence.12
Increase in learning includes spiritual as well as temporal knowledge. We stress the importance of understanding sacred scriptures. An independent study recently found that Latter-day Saints were the most knowledgeable about Christianity and the Bible.13 If you want to understand the Bible better, to understand the Book of Mormon better, and gain a broader comprehension of the brotherhood of man and the fatherhood of God, ask the missionaries! They can help you!
Many of you have a deep desire to help people in need. Because we follow Jesus Christ, Latter-day Saints are also compelled by that insatiable urge.14 Anyone may join with us to help the needy and provide relief to victims of disaster anywhere in the world. If you want to participate, ask the missionaries! They can help you!
And if you want to know more about life after death, about heaven, about God's plan for you; if you want to know more about the Lord Jesus Christ, His Atonement, and the Restoration of His Church as it was originally established, ask the missionaries! They can help you!
I know that God lives. Jesus is the Christ. His Church has been restored. Fervently I pray that God may bless each of you and each of our precious missionaries. In the name of Jesus Christ, amen.