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《Journal of Beijing University of Technology》 2008-10
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Flexibility Curvature Matrix Method Based on Mode in the Damage Detection of Structures

LI Yong-mei~(1,2) ZHOU Xi-yuan~1 GAO Xiang-yu~1 1.College of Civil Engineering and Architecture,Beijing University of Technology,Beijing 100124,China; 2.Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education of China,Beijing University of Technology,Beijing 100124,China  
The maximum of each column of flexibility curvature matrix constructed from flexibility matrix is presented as a new indicator F_(CM) for damage detection.The numerical simulations indicate that the damage location in structures can be identified by F_(CM) for cantilever beams,fixed supported beams,simply supported beams,continuous beams and so on without baseline modal parameters.Not only simple damage but also multiple ones can be detected with satisfactory precision by F_(CM) using only a few of the lower frequency modes.
【Fund】: 北京市自然科学基金资助项目(8062009);; 中国博士后科学基金项目资助(20060390387).
【CateGory Index】: TU312.3
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