| 一种基于频率的损伤识别新方法 |
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| 引用本文： | 李学平,余志武. 一种基于频率的损伤识别新方法[J]. 工业建筑, 2006, 36(Z1): 213-214 |
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| 作者姓名： | 李学平 余志武 |
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| 作者单位： | 中南大学,铁道校区土建院,长沙,410075 |
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| 基金项目： | 国家自然科学基金资助项目(50078007) |
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| 摘 要： | 运用摄动方法和线弹性断裂力学理论讨论了基于模态分析的梁型结构无损检测方法。从理论上推导了利用测得的少数前几阶固有频率,来识别裂纹位置和裂纹深度的算式。通过试验结果验证,表明方法简单可行,对解决工程实际问题具有一定的参考价值。
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| 关 键 词： | 梁型结构 模态分析 损伤识别 |
| 修稿时间： | 2005-12-17 |
A NEW METHOD FOR DAMAGE IDENTIFICATION BASED ON FREQUENCY |
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| Li Xueping,Yu Zhiwu. A NEW METHOD FOR DAMAGE IDENTIFICATION BASED ON FREQUENCY[J]. Industrial Construction, 2006, 36(Z1): 213-214 |
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| Authors: | Li Xueping Yu Zhiwu |
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| Abstract: | A nondestructive detecting method based on modal analysis is presented for beam-type structures from perturbation method and linear elastic fracture mechanics.A damage-localization and a damage-sizing algorithm are formulated from a first few natural frequencies.The result of testing indicates that this method is new,efficient and simple. |
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| Keywords: | beam-type structures modal analysis damage identification |
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