Extraction of real modes and physical matrices from modal testing

查看全文 作　　者：Wang [1]Tong;Zhang [1]Lingmi;Tee Kong [2]Fah

机构地区：[1]MOE Key Lab of Structural Mechanics and Control for Aircraft, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;[2]Department of Civil Engineering, University of Greenwich, United Kingdom

出　　处：《Earthquake Engineering and Engineering Vibration》索引2011年第10卷第2期,共9页

基　　金：NUAA Research Funding Under Grant No. V1022-013 摘　　要：A technique to extract real modes from the identifi ed complex modes is presented in this paper, which enables the normalized real mode shapes, modal masses, and full or reduced mass and stiffness matrices to be obtained. The theoretical derivation of the method is provided in detail. An 11-DOF vibration system is used to validate the algorithm, and to analyze the effects of the number of modes utilized and measurement DOFs on the extraction results. Finally, the method is used to extract real modes from both experimental modal analysis and operational modal analysis. 关键词：模态试验刚度矩阵提取实验模态分析物理振动系统自由度实模式

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Extraction of real modes and physical matrices from modal testing

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