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A MODEL IDENTIFICATION METHOD OF VIBRATING STRUCTURES FROM INCOMPLETE MODAL INFORMATION
作者姓名:郑小平  姚振汉  蘧时胜
摘    要:AMODELIDENTIFICATIONMETHODOFVIBRATINGSTRUCTURESFROMINCOMPLETEMODALINFORMATIONZhengXiaoping(郑小平)YaoZhenhan(姚振汉)QuShisheng(蘧时胜)...


A MODEL IDENTIFICATION METHOD OF VIBRATING STRUCTURES FROM INCOMPLETE MODAL INFORMATION
Zheng Xiaoping , Yao Zhenhan , Qu Shisheng.A MODEL IDENTIFICATION METHOD OF VIBRATING STRUCTURES FROM INCOMPLETE MODAL INFORMATION[J].Applied Mathematics and Mechanics(English Edition),1995(5).
Authors:Zheng Xiaoping  Yao Zhenhan  Qu Shisheng
Institution:Zheng Xiaoping ; Yao Zhenhan ; Qu Shisheng
Abstract:The accurate mathematical models for complicated structures are verydifficult to construct.The work presented here provides an identification method for estimating the mass, damping , and stiffness matrices of linear dynamical systems from incompleteexperimental data. The mass, stiffness, and damping matrices are assumed to be real,symmetric, and positive definite. The partial set of experimental complex eigenvalues and corresponding eigenvectors are given. In the proposed method the least squaresalgorithm is combined with the iteration technique to determine systems identified matrices and corresponding design parameters. several illustrative examples, are presented to demonstrate the reliability of the proposed method .It is emphasized thatthe mass, damping and stiffness martices can be identified simultaneously.
Keywords:vibrating structures  model identification  incompleteexperiemntal modal data  the least squares method  iteration technique
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