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An easily implemented static condensation method for structural sensitivity analysisA black-box approach to static condensation for sensitivity analysis is presented with illustrative examples of a cube and a car structure. The sensitivity of the structural response with respect to joint stiffness parameter is calculated using the direct method, forward-difference, and central-difference schemes. The efficiency of the various methods for identifying joint stiffness parameters from measured static deflections of these structures is compared. The results indicate that the use of static condensation can reduce computation times significantly and the black-box approach is only slightly less efficient than the standard implementation of static condensation. The ease of implementation of the black-box approach recommends it for use with general-purpose finite element codes that do not have a built-in facility for static condensation.
Document ID
19910045109
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gangadharan, S. N.
(Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Haftka, R. T.
(Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Nikolaidis, E.
(Virginia Polytechnic Institute and State University Blacksburg, United States)
Date Acquired
August 14, 2013
Publication Date
April 1, 1990
Publication Information
Publication: Communications in Applied Numerical Methods
Volume: 6
ISSN: 0748-8025
Subject Category
Structural Mechanics
Accession Number
91A29732
Funding Number(s)
CONTRACT_GRANT: NAG1-224
Distribution Limits
Public
Copyright
Other

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