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《Journal of South China University of Technology(Natural Science)》 2003-S1
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Damage Identification of Beams Based on the Vibration Sensitivity Analysis

Li Xue-yan Liu Ji-ke (Dept. of Applied Mechanics and Engineering, Zhongshan University, Guangzhou 510275, China)  
A sensitivity analysis method for structural damage identification of beams is presented, which is developed by changing the model parameters (natural frequencies and corresponding modes). By the vibration sensitivity analysis and calculation of both natural frequencies and model vectors (including the first order and the second order), the damage in beams is located and the extent of the damage is obtained with the aid of the finite element method. An illustrative example is given to verify the method presented in this paper and satisfactory results are observed.
【Fund】: 高等学校优秀青年教师教学科研奖励计划资助项目(TRAPYT2001);; 国家自然科学基金资助项目(10102023);; 广东省自然科学基金资助项目(001180);; 广东省科技计划资助项目(2002C32405);; 香港中山大学高等学术研究中心基金资助项目(03M4)
【CateGory Index】: O327
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【Co-references】
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