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�������պ����ѧѧ�� 2010, Vol. 36 Issue (8) :887-891    DOI:
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Fuzzy theory for uncertain structural analysis based on measurement data
Wang Xiaojun, Yang Haifeng, Qiu Zhiping, Song Weibo*
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� Based on the measurement data,a fuzzy analysis method was proposed to deal with the problems of uncertain structural mechanics. A new membership function of the uncertain parameters was constructed by utilizing the difference coefficient, and then a finite number of scattered data points of the uncertain parameters were described as fuzzy parameters and quantified by this method. The true values and the probable intervals for them were estimated, which were applied into the fuzzy finite element analysis of structural mechanics to obtain the uncertain response of the structure.A 10-bar truss structure with parametric uncertainties was used to analyze the uncertain response by the presented method.Numerical results illustrate its feasibility and validity.
Keywords�� uncertainty analysis   fuzzy theory   measurements   membership function   interval estimation     
Received 2009-07-02;
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About author: ������(1978-), ��, �����ɽ��, ������, XJWang@buaa.edu.cn.
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������, ���, ��־ƽ, ��΢��.���ڲ������ݵIJ�ȷ���Խṹ������ģ������[J]  �������պ����ѧѧ��, 2010,V36(8): 887-891
Wang Xiaojun, Yang Haifeng, Qiu Zhiping, Song Weibo.Fuzzy theory for uncertain structural analysis based on measurement data[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(8): 887-891
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