@article { author = {Talezadehlari, A. and Nikbakht, A. and Sadighi, M. and Yademellat, H.}, title = {Effect of Viscoelastic Interfaces on Thermo-Mechanical Behavior of a Layered Functionally Graded Spherical Vessel}, journal = {AUT Journal of Mechanical Engineering}, volume = {1}, number = {1}, pages = {75-88}, year = {2017}, publisher = {Amirkabir University of Technology}, issn = {2588-2945}, eissn = {2588-2937}, doi = {10.22060/mej.2016.744}, abstract = {In layered structures, the interface of layers is not always perfect and the analysis ofproblems which have imperfect interfaces is of the high level of importance. In this paper, an analyticalapproach is used to study the behavior of a layered functionally graded spherical vessel under thermaland mechanical loadings at the inner and outer surfaces. The interfaces of the layers in the vessel areconsidered to be imperfect and a viscoelastic layer of negligible thickness is assumed between anytwo layers. The behavior of these viscoelastic layers is modeled by means of Kelvin-Voigt model. Inorder to solve the problem, the governing equations of each layer are extracted via the thermoelasticitytheory and by applying the appropriate boundary conditions at the interface of the layers, the overalldisplacement and stress fields are found in the vessel and numerical results are presented for differentparameters. The obtained results show that the stiffness of the viscoelastic layer affects the value of thedisplacements and the stresses as well as the stabilization time of the system. However, changing thedamping parameter of the Kelvin-Voigt model only changes the stabilization time and not the values ofthe displacements and stresses.}, keywords = {Spherical vessel,Functionally graded material,Viscoelastic Interface,Mechanical Loading,Thermal Loading}, url = {https://ajme.aut.ac.ir/article_744.html}, eprint = {https://ajme.aut.ac.ir/article_744_6756f7e08dbeccdf239e24c31d7d1ef3.pdf} }