Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6741
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Title: Substructure based approach to finite element model updating
Authors: Weng, S
Xia, Y 
Xu, YL 
Zhu, HP
Issue Date: May-2011
Source: Computers & structures, May 2011, v. 89, no. 9–10, p. 772-782
Abstract: A substructure-based finite element model updating technique is proposed in this paper. A few eigenmodes of the independent substructures and their associated derivative matrices are assembled into a reduced eigenequation to recover the eigensolutions and eigensensitivities of the global structure. Consequently, only the concerned substructures and the reduced eigenequation are re-analyzed in the optimization process, thus reducing the computational load of the traditional model updating methods which perform on the global structure. Applications of the proposed substructure-based model updating to a frame structure and a practical bridge demonstrate that the present method is computationally effective and efficient.
Keywords: Model updating
Substructuring
Eigensolution
Eigensensitivity
Publisher: Pergamon Press
Journal: Computers & structures 
ISSN: 0045-7949
DOI: 10.1016/j.compstruc.2011.02.004
Rights: © 2011 Elsevier Ltd. All rights reserved.
NOTICE: this is the author’s version of a work that was accepted for publication in Computers & Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Computers & Structures, Vol 89, Issue 9-10, (May 2011) DOI 10.1016/j.compstruc.2011.02.004.
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