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《China Mechanical Engineering》 2016-02
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A Simple and Convenient Method to Obtain Strain Modal Shape

Wu Jiaquan;Ye Fei;Li Hongyan;Zhang Xinyu;Ma Kun;Kunming University of Science and Technology;  
Based on strain modal analysis theory,a new strain modal shape factor was defined.The principles and methods to obtain structure strain modal shape from FRF were derived.Meanwhile,the method was validated by a simply supported beam experiment.The results show that the method does not need to measure the displacement mode,and can quickly obtain the strain modal shape by using strain gage to measure strain FRF information.This method simplifies the process of strain modal experimental testing in structural damage identification.
【Fund】: 国家自然科学基金资助项目(51278235);; 云南省高校结构健康诊断重点实验室项目(KKKP201207003);; 云南省教育厅重大项目(KKJI201507001)
【CateGory Index】: TB302;TB123
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