Research Initiation:  Structural Stiffness Variations in    Flexible Multibody Dynamic Systems
{'Code': '07030000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CMMI', 'LongName': 'Div Of Civil, Mechanical, & Manufact Inn'}}
{'SignBlockName': 'Elbert L. Marsh', 'PO_EMAI': None, 'PO_PHON': None}
This project addresses a current and increasing need to better                  understand the structural stiffness characteristics of complex multi            body mechanical systems.  Robots, articulated spacecraft and many               other configurations fall in this class of systems.  Currently, it is           generally assumed that the structural stiffnesses of system                     components are nearly constant over a wide range of rotational                  motion.  The trend toward lighter weight components invalidates this            assumption and demands a reexamination of the issue of structural               stiffness for flexible multibody systems.  This research develops new           strategies and techniques for understanding this issue and for the              simulation of large displacement, small deformation behavior of                 complicated multibody systems.
{'FirstName': 'Christophe', 'LastName': 'Pierre', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Christophe Pierre', 'EmailAddress': 'christophe.pierre@mcgill.ca', 'NSF_ID': '000193736', 'StartDate': '09/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Regents of the University of Michigan - Ann Arbor', 'CityName': 'ANN ARBOR', 'ZipCode': '481091079', 'PhoneNumber': '7347636438', 'StreetAddress': '1109 GEDDES AVE, SUITE 3300', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Michigan', 'StateCode': 'MI', 'CONGRESSDISTRICT': '06', 'CONGRESS_DISTRICT_ORG': 'MI06', 'ORG_UEI_NUM': 'GNJ7BBP73WE9', 'ORG_LGL_BUS_NAME': 'REGENTS OF THE UNIVERSITY OF MICHIGAN', 'ORG_PRNT_UEI_NUM': None}
{'Name': None, 'CityName': None, 'StateCode': None, 'ZipCode': None, 'StreetAddress': None, 'CountryCode': None, 'CountryName': None, 'StateName': None, 'CountryFlag': None, 'CONGRESSDISTRICT': None, 'CONGRESS_DISTRICT_PERF': '""'}
{'Code': '1445', 'Text': 'DYNAMICS & CONTROL'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8809430.xml'}