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Constrained hierarchical least square nonlinear equation solversThe current paper develops a constrained hierarchical least square nonlinear equation solver. The procedure can handle the response behavior of systems which possess indefinite tangent stiffness characteristics. Due to the generality of the scheme, this can be achieved at various hierarchical application levels. For instance, in the case of finite element simulations, various combinations of either degree of freedom, nodal, elemental, substructural, and global level iterations are possible. Overall, this enables a solution methodology which is highly stable and storage efficient. To demonstrate the capability of the constrained hierarchical least square methodology, benchmarking examples are presented which treat structure exhibiting highly nonlinear pre- and postbuckling behavior wherein several indefinite stiffness transitions occur.
Document ID
19860059036
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Padovan, J.
(Akron Univ. Akron, OH, United States)
Lackney, J.
(Akron, University OH, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1986
Publication Information
Publication: Computers and Structures
Volume: 23
Issue: 2 19
ISSN: 0045-7949
Subject Category
Structural Mechanics
Accession Number
86A43774
Funding Number(s)
CONTRACT_GRANT: NSG-3283
Distribution Limits
Public
Copyright
Other

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