文档介绍：
Updating the Finite Element Model plex Structures
by Using the Kriging Preditor#
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Liu Yang, Tang Xu, ZHang Shaoyi*
(School of Transportation Science and Engineering, Harbin Institute of Technology)
Abstract: Updating the structural model plex structures is time consuming due to the large size
of the finite element model (FEM). Using conventional methods for these cases putationally
expensive or even impossible. A two-level method, bined the Kriging predictor and the
component mode synthesis (CMS) technique,was proposed to ensure the essful implementing of
FEM updating of large-scale structures. In the first level, the CMS was applied to build a reasonable
condensedFEM plex 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.
Key words: Complex structures; Structural model updating; Component mode synthesis; Kriging
model3
0 Introduction
FEM updating of structures is to correct the modeling errors of the analytical FEM by using the
measured data, and this technique is applied to generate a refined baseline FEM that accurately predict
the dynamic or static behavior of structures.