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�������պ����ѧѧ�� 2004, Vol. 30 Issue (07) :648-651    DOI:
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Parametric correcting method for dynamic mathematical model via dynamical response
Luo Zhangping, Xiang Jinwu*
School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� Improvement of structural dynamical model using dynamical response was studied. The approach is correcting physical parameters of given finite element model using experimental steady displacement responses. The mathematical model for model updating was constructed through the constitutive relations error which is an energy norm derived by stress-strain relationship and inertial force in a continuum system. The parameter estimation couples with expansion to uncompleted experimental data, and a perturbation item was introduced to account for the dependence of expansion data on the parameter variation. An optimum iterative process wasemployed to calculate corrected parameters. Numerical example illustrates the presented method to be effective and valid for estimating physical parameters.
Keywords�� structural dynamics   finite element method   dynamical response   model updating   constitutive relations     
Received 2003-02-27;

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About author: ����ƽ(1968-),��,�����齭��,��ʿ��, luozhangping@163.com.
����ƽ, �����.�ṹ����ѧģ��������һ�ֲ����ͷ���[J]  �������պ����ѧѧ��, 2004,V30(07): 648-651
Luo Zhangping, Xiang Jinwu.Parametric correcting method for dynamic mathematical model via dynamical response[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(07): 648-651
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2004/V30/I07/648
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