| 基于Wigner-Ville时频幅值曲率的结构位置损伤识别 |
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| 引用本文： | 杨朝山,程华,王仲刚,周凌,黄高琼.基于Wigner-Ville时频幅值曲率的结构位置损伤识别[J].后勤工程学院学报,2010,26(6):1-5. |
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| 作者姓名： | 杨朝山 程华 王仲刚 周凌 黄高琼 |
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| 作者单位： | 后勤工程学院军事建筑工程系; |
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| 摘 要： | 为探索既有明确物理意义又有良好实用性的结构损伤识别方法,利用Wigner-Ville时频分布（WVD）对结构自由振动响应进行解析,建立了WVD时频幅值与结构模态参数的函数关系,提出利用测点WVD时频幅值曲率来识别损伤。该方法物理意义明确,初始激励易于实施,且不需要模态参数识别,提高了损伤识别精度。算例分析结果表明,所提出的方法能较好地识别出结构单个或多个损伤位置,且数据易于获得,处理简便。
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| 关 键 词： | 损伤识别 Wigner-Ville分布 模态参数 曲率 |
Damage Location Detection for Structures Based on Curvature of Wigner-Ville Time-frequency Amplitude |
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| YANG Chao-shan,CHENG Hua,WANG Zhong-gang,ZHOU Ling,HUANG Gao-qiong.Damage Location Detection for Structures Based on Curvature of Wigner-Ville Time-frequency Amplitude[J].Journal of Logistical Engineering University,2010,26(6):1-5. |
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| Authors: | YANG Chao-shan CHENG Hua WANG Zhong-gang ZHOU Ling HUANG Gao-qiong |
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| Institution: | YANG Chao-shan,CHENG Hua,WANG Zhong-gang,ZHOU Ling,HUANG Gao-qiong (Dept.of Architecture & Civil Engineering,LEU,Chongqing 401311,China) |
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| Abstract: | To explore a method of damage detection for structures with clear physical signification and good practicality,the function relation between WVD amplitude and model parameters is founded on the basis of WVD analytical expression of free vibration response,then the WVD amplitude curvature based on sensors is suggested for damage detection.The physical meaning of this method is clear and the initial motivation is easy to implement.This method also does not need to identify the modal parameters and improve the... |
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| Keywords: | damage detection Winger-Ville distribution(WVD) mode parameter curvature |
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