| 基于曲率模态和小波变换的结构损伤识别方法 |
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| 引用本文： | 孙增寿,韩建刚,任伟新.基于曲率模态和小波变换的结构损伤识别方法[J].振动．测试与诊断,2005,25(4):263-267. |
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| 作者姓名： | 孙增寿 韩建刚 任伟新 |
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| 作者单位： | 1. 福州大学土木建筑工程学院,福州,350002;郑州大学土木工程学院,郑州,450002
2. 福州大学土木建筑工程学院,福州,350002 |
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| 基金项目： | 教育部留学归国人员基金资助项目. |
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| 摘 要： | 在结构曲率模态基础上,提出了一种基于小波变换的结构损伤检测和定位方法.利用双正交小波函数对损伤前后结构的曲率模态进行小波变换,通过损伤前后小波变换系数的变化和分布情况建立了结构损伤指标,可判定损伤存在,确定损伤位置和估计损伤程度,并通过一两端简支梁的数值模拟对该方法进行了验证.
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| 关 键 词： | 小波变换 曲率模态 损伤识别 损伤定位 |
| 收稿时间： | 2004-07-08 |
| 修稿时间： | 2004-12-20 |
Structural Damages Identification Based on Curvature Mode and Wavelet Transform |
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| Sun Zengshou,Han Jiangang,Ren Weixin.Structural Damages Identification Based on Curvature Mode and Wavelet Transform[J].Journal of Vibration,Measurement & Diagnosis,2005,25(4):263-267. |
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| Authors: | Sun Zengshou Han Jiangang Ren Weixin |
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| Affiliation: | Sun Zengshou~ |
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| Abstract: | Based on curvature mode and wavelet transform,this paper presents a recognition method for structural damages.The structural curvature mode curves before and after damage are transformed in biorthogonal wavelets.The structural damage index is given out with the change and distribution of wavelet transform coefficients before and after damage.The structural damage index can be used to determine the existence,location and degree of the damage.And the method is verified with the numerical simulation in a simple supported beam.The simulation results show that the method is effective. |
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| Keywords: | wavelet transform curvature mode damage identification damage location |
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