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《Sichuan Building Science》 2011-02
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The study of model match techniques used in damage identification on frame structure

XIAO Ye,CHEN Jianyi,YI Pinghua(College of Civil and Environmental Engineering,East China Institute of Technology,Fuzhou 344000,China)  
Mismatching between the degrees of freedoms(DOFS) of the measurement model and those of the finite element model is a difficult problem when damage detection technique is used to the actual project.Model reduction algorithms and modal expansion algorithms are the main methods to solve the problem.Through a numerical simulation of the single-layer frame structure finite element model,the damage identification of frame structure under the incomplete measurement information is realized by using mode shape rotation difference.The results show that by using Guyan reduction and modal expansion algorithms to match the DOFS are of high accuracy,which indicates that model reduction and modal expansion algorithms can apply to the damage identification of frame structure.
【Fund】: 东华理工大学校长基金(DHXK1008)
【CateGory Index】: TU317
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