Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6754
Title: Comparisons between Modal-Parameter-Based and Flexibility-Based Damage Identification Methods
Authors: Wang, XJ
Zhou, XQ
Xia, Y 
Weng, S
Keywords: Damage identification
Modal parameters
Modal flexibility
Uncertainty
Statistical model updating
Issue Date: Sep-2013
Publisher: Multi-Science
Source: Advances in structural engineering, Sept. 2013, v. 16, no. 9, p. 1611-1620 How to cite?
Journal: Advances in structural engineering 
Abstract: Modal parameters and modal flexibility obtained from the modal experiment have been used for damage identification in frequency domain. These two methods are compared in this paper numerically and experimentally. The optimization objective function of the former method is a weighted function of the frequency and mode shape residues, in which different weights can be assigned to the frequencies and mode shapes so that their degrees of accuracy can be taken into account. The optimization objective function of the latter method is the modal flexibility residue. Based on the same modal data, the two methods are compared from different aspects, including the damage configurations and uncertainties in the modal data. Results show that using the modal parameters directly can detect damage more accurately and reliably than using the modal flexibility.
URI: http://hdl.handle.net/10397/6754
ISSN: 1369-4332
EISSN: 2048-4011
DOI: 10.1260/1369-4332.16.9.1611
Rights: © Multi-Science Publishing
Posted with permission of the publisher.
Appears in Collections:Journal/Magazine Article

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