Dynamic condensation approach to finite element model updating of large-scale structures

S. Weng, W. Tian, H. P. Zhu, F. N. Li, Yong Xia

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

A dynamic condensation approach to finite element model updating is proposed in this paper. The global structure is transformed into a condensed system after being divided according to master DOFs and slave DOFs. The eigensolutions and eigensensitivities of a structure are calculated from the condensed eigenequation together with a transformation matrix relating the master DOFs to the full DOFs. The transformation matrix and its sensitivity with respect to a specific parameter are obtained after a simple iterative process. Consequently, the model updating process is performed on the reduced system, which reduces the computational load of the traditional model updating methods that perform on the global structure. Application of the proposed dynamic condensation method to a frame structure demonstrates that the present method is effective in finite element model updating.
Original languageEnglish
Title of host publicationMechanics of Structures and Materials
Subtitle of host publicationAdvancements and Challenges - Proceedings of the 24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM24 2016
PublisherCRC Press/Balkem
Pages1069-1076
Number of pages8
ISBN (Print)9781138029934
Publication statusPublished - 1 Jan 2017
Event24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2016 - Perth, Australia
Duration: 6 Dec 20169 Dec 2016

Conference

Conference24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2016
CountryAustralia
CityPerth
Period6/12/169/12/16

ASJC Scopus subject areas

  • Mechanics of Materials
  • Civil and Structural Engineering

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