Substructure based approach to finite element model updating

Shun Weng, Yong Xia, You Lin Xu, Hong Ping Zhu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

86 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)772-782
Number of pages11
JournalComputers and Structures
Volume89
Issue number9-10
DOIs
Publication statusPublished - 1 May 2011

Keywords

  • Eigensensitivity
  • Eigensolution
  • Model updating
  • Substructuring

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Materials Science(all)
  • Mechanical Engineering
  • Computer Science Applications

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