| 基于频率摄动理论识别悬臂梁损伤方法的试验研究 |
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| 引用本文： | 杜思义,唐军,陈淮.基于频率摄动理论识别悬臂梁损伤方法的试验研究[J].世界地震工程,2009,25(4). |
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| 作者姓名： | 杜思义 唐军 陈淮 |
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| 作者单位： | 1. 郑州大学,土木工程学院,河南,郑州,450001
2. 郑州大学,土木工程学院,河南,郑州,450001;河南省新开元路桥工程咨询有限公司,河南,郑州450016 |
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| 基金项目： | 河南省杰出人才计划项目 |
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| 摘 要： | 将悬臂梁的振动理论和矩阵摄动理论相结合,推出悬臂梁损伤或缺陷的识别公式.通过2根钢悬臂梁的试验,测出其损伤前后的频率,并根据测试结果对梁的损伤程度进行判定.结果表明,用摄动理论不仅可以识别悬臂构件的损伤位置,还可以定量求出其损伤程度.
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| 关 键 词： | 悬臂梁 摄动理论 损伤识别 |
Experimental research on damage detection of cantilever beam based on frequency perturbation theory |
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| DU Siyi,TANG Jun,CHEN Huai.Experimental research on damage detection of cantilever beam based on frequency perturbation theory[J].World Information On Earthquake Engineering,2009,25(4). |
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| Authors: | DU Siyi TANG Jun CHEN Huai |
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| Abstract: | Combined vibration theory of cantilever beam with matrix perturbation theory, identification formula of damage or defection of cantilever beams is putforward. By experiment of two steel cantilever beams, their frequencies before and after damage are tested.According to tested results, damage extent of the beams can be judged. The results indicate that, not only damage location of the cantilever beams can be identified, but also damage degree of them can be calculated out quantitatively. |
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| Keywords: | cantilever beam perturbation theory damage identification |
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