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Updating the Finite Element Model of Complex Structures by Using the Kriging Preditor
Liu Yang * #,Tang Xu,ZHang Shaoyi
School of Transportation Science and Engineering, Harbin Institute of Technology
*Correspondence author
#Submitted by
Funding: The Research Fund for the Doctoral Program of Higher Education (No.20102302120059)
Opened online:20 December 2013
Accepted by: none
Citation: Liu Yang,Tang Xu,ZHang Shaoyi.Updating the Finite Element Model of Complex Structures by Using the Kriging Preditor[OL]. [20 December 2013] http://en.paper.edu.cn/en_releasepaper/content/4574506
Updating the structural model of complex structures is time consuming due to the large size of the finite element model (FEM). Using conventional methods for these cases is computationally expensive or even impossible. A two-level method, which combined the Kriging predictor and the component mode synthesis (CMS) technique,was proposed to ensure the successful implementing of FEM updating of large-scale structures. In the first level, the CMS was applied to build a reasonable condensedFEM of complex structures. In the second level, theKriging predictor that was deemed as a surrogate FEM in structural dynamicswas generated based on the condensed FEM. Finally, the effectiveness of the proposed method was demonstrated by updating the FEM of a real arch bridge with the measured modal parameters.
Keywords:Complex structures; Structural model updating; Component mode synthesis; Kriging model3

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