Sensitivity-Based Finite Element Model Updating Using Dynamic Condensation Approach

Tianyi Zhu, Wei Tian, Shun Weng, Hanbin Ge, Yong Xia, Chao Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

Abstract

The FE model updating of large-scale structures is usually time-consuming or even impossible. This paper proposes a dynamic condensation approach for model updating of large-scale structures. The eigensolutions are calculated from a condensed eigenequation and the eigensensitivities are calculated without selection of additional master DOFs, which is helpful to improve the efficiency of FE model updating. The proposed model updating method is applied to an eight-storey frame and the Jun Shan Yangtze Bridge. By employing the dynamic condensation approach, the number of iterations for the eigensensitivities is gradually increased according to the model updating process, which contributes to accelerate the convergence of model updating.
Original languageEnglish
JournalInternational Journal of Structural Stability and Dynamics
DOIs
Publication statusAccepted/In press - 14 Dec 2017

Keywords

  • dynamic condensation approach
  • eigensensitivities
  • eigensolutions
  • Finite element model updating

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Aerospace Engineering
  • Ocean Engineering
  • Mechanical Engineering
  • Applied Mathematics

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