期刊
COMPUTERS & STRUCTURES
卷 89, 期 9-10, 页码 772-782出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compstruc.2011.02.004
关键词
Model updating; Substructuring; Eigensolution; Eigensensitivity
资金
- Research Grants Council of the Hong Kong Special Administrative Region, China [PolyU 5321/08E]
- Hong Kong Polytechnic University [A-PC0F]
- Department of Civil and Structural Engineering
- Hong Kong Polytechnic University
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. (C) 2011 Elsevier Ltd. All rights reserved.
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