| 宽带随机激励下结构损伤的小波监测 |
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| 引用本文： | 董广明,陈进,雷宣扬,宁佐贵,王东升,王雄祥.宽带随机激励下结构损伤的小波监测[J].上海交通大学学报,2005,39(12):2057-2060,2071. |
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| 作者姓名： | 董广明 陈进 雷宣扬 宁佐贵 王东升 王雄祥 |
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| 作者单位： | 上海交通大学,振动、冲击、噪声国家重点实验室,上海,200240;中国工程物理研究院,结构力学研究所,四川,绵阳,621900 |
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| 基金项目： | 国家自然科学基金资助项目（10176014） |
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| 摘 要： | 小波变换已被用于监测结构发生损伤时所引起的响应信号奇异性，但是，当结构受宽带随机激励时，结构响应信号的奇异性也会由激励所引起．研究了分离激励和结构损伤两方面引起的响应信号奇异性的小波变换方法，并将该方法应用于美国土木工程师学会（ASCE）结构健康监测基准的有限元模型分析中．仿真结果表明，该方法是有效的．
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| 关 键 词： | 结构损伤监测 小波变换 宽带随机激励 |
| 文章编号： | 1006-2467（2005）12-2057-04 |
| 收稿时间： | 2005-01-10 |
| 修稿时间： | 2005-01-10 |
Wavelet-Based Damage Monitoring of Structures under Broadband Random Excitation |
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| DONG Guang-ming,CHEN Jin,LEI Xuan-yang,NING Zuo-gui,WANG Dong-sheng,WANG Xiong-xiang.Wavelet-Based Damage Monitoring of Structures under Broadband Random Excitation[J].Journal of Shanghai Jiaotong University,2005,39(12):2057-2060,2071. |
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| Authors: | DONG Guang-ming CHEN Jin LEI Xuan-yang NING Zuo-gui WANG Dong-sheng WANG Xiong-xiang |
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| Abstract: | Wavelet transform has been used for detecting the singularities in structural response,which are caused by sudden changes in the system parameters.If the structure is subject to broadband random excitation like earthquakes,however,the singularities could also be caused by the excitation process.The isolation method based on wavelet transform was investigated to separate the singularities due to the excitation and the singularities due to the structural damages.An FEM model for the American Society of Civil Engineers(ASCE) structural health monitoring benchmark problem was used to demonstrate the validity of the proposed algorithm. |
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| Keywords: | structural damage monitoring wavelet transform broadband random excitation |
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