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Title: Improved substructuring method for eigensolutions of large-scale structures
Authors: Weng, S
Xia, Y 
Xu, YL 
Zhou, XQ
Zhu, HP
Keywords: Damage detection
Modal analysis
Issue Date: 19-Jun-2009
Publisher: Academic Press
Source: Journal of sound and vibration, 19 June 2009, v. 323, no. 3-5, p. 718-736 How to cite?
Journal: Journal of sound and vibration 
Abstract: The substructuring technology possesses much merit when it is utilized in model updating or damage identification of large-scale structures. However, the conventional substructuring technologies require the complete eigensolutions of all substructures available to obtain the eigensolutions of the global structure, even if only a few eigensolutions of the global structure are needed. This paper proposes a modal truncation approximation in substructuring method, in which only the lowest eigensolutions of the substructures need to be calculated. Consequently, the computation efficiency is improved. The discarded higher eigensolutions are compensated by the residual flexibility. The division of substructures and the selection of master modes in each substructure are also studied. The proposed substructuring method is illustrated by a frame structure and a practical bridge. The two case studies verify that the proposed method can improve the original substructuring method significantly.
ISSN: 0022-460X
EISSN: 1095-8568
Rights: © 2009 Elsevier Ltd. All rights reserved.
NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Sound and Vibration. 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 Journal of Sound and Vibration, Vol 323, Issue 3-5, (19 June 2009) DOI 10.1016/j.jsv.2009.01.015.
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