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dc.contributorDepartment of Civil and Environmental Engineering-
dc.creatorDing, Y-
dc.creatorLaw, SS-
dc.publisherDepartment of Civil and Structural Engineering and Department of Mechanical Engineering, The Hong Kong Polytechnic University.en_US
dc.rightsCopyright ©2011 Department of Civil and Structural Engineering and Department of Mechanical Engineering, Hong Kong Polytechnic Universityen_US
dc.rightsPosted with permission of the publisher.en_US
dc.subjectParameter identificationen_US
dc.subjectAdaptive regularizationen_US
dc.titleTime-variant structural parameter identificationen_US
dc.typeConference Paperen_US
dcterms.abstractA new method based on windowed measured dynamic response is proposed for model updating of a time-variant structural system with unknown initial structural responses. A two phase identification algorithm is presented to identify both the initial structural responses and the time-variant structural parameter in each small time interval. Tikhonov regularization method is applied for the former while a modified adaptive regularization method is proposed to identify the structural parameter. The second method takes care of the initial model errors in updating the structural parameters. A multi-storey linear shear frame structure with and without nonlinear seismic isolators subject to seismic ground motion is used for the numerical study. A normally distributed initial model error of the structure is included. The proposed time-variant parameter identification method is found capable of identifying the time-variant parameters fairly accurately even with 10% measurement noise.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationDynamics for sustainable engineering : proceedings of the 14th Asia-Pacific Vibration Conference, 5-8 December 2011, Hong Kong, v. 4, p. 1699-1708-
dc.description.oaVersion of Recorden_US
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