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Research on Model Updating Method Based on Frequency Response Functions

LI Wei-ming,HONG Jia-zhen(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiaotong University,Shanghai 200240,China)  
This paper proposed a new model updating method based on frequency response functions which avoids the modal analysis process.This method takes the design parameters as the updating objects,moreover,it does not need matching the frequency response functions of the finite element model and the experiment and only a few measured data are needed to fulfill model updating.The model updating of a plane truss structure shows that the proposed method can get the perfect results under disturb of noise which proves the validity of the method.
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