| 基于固有模态函数振动传递率的结构损伤识别 |
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| 引用本文： | 顾建祖,郝文峰,骆英,汤灿.基于固有模态函数振动传递率的结构损伤识别[J].建筑科学与工程学报,2011,28(1):27-32. |
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| 作者姓名： | 顾建祖 郝文峰 骆英 汤灿 |
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| 作者单位： | 江苏大学机械工业机械结构损伤检测评估技术重点实验室,江苏镇江,212013 |
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| 基金项目： | 国家自然科学基金项目，国家自然科学基金项目，建设部研究开发项目 |
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| 摘 要： | 提出了无需量测外荷载的新的结构损伤识别方法,将经验模态分解应用于结构损伤识别,通过求振动响应信号固有模态函数的振动传递率,构建结构损伤识别参数;通过对预置不同开胶损伤程度的玻璃幕墙试件进行动态测试,得到不同损伤程度下玻璃幕墙的固有模态函数振动传递率,并根据振动传递率的差别来识别和评估玻璃幕墙开胶损伤程度。研究结果表明:与传统方法相比,该方法无需量测外荷载也能精确识别结构损伤,通过损伤参数值也能判断损伤大小。
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| 关 键 词： | 经验模态分解 固有模态函数 振动传递率 损伤识别 玻璃幕墙 |
Structural Damage Identification Based on Intrinsic Mode Function Vibration Transmissibility |
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| GU Jian-zu,HAO Wen-feng,LUO Ying,TANG Can.Structural Damage Identification Based on Intrinsic Mode Function Vibration Transmissibility[J].Journal of Architecture and Civil Engineering,2011,28(1):27-32. |
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| Authors: | GU Jian-zu HAO Wen-feng LUO Ying TANG Can |
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| Affiliation: | GU Jian-zu,HAO Wen-feng,LUO Ying,TANG Can (Chinese Machinery Industry Key Laboratory for Mechanical Structure Damage Detection Technology,Jiangsu University,Zhenjiang 212013,Jiangsu,China) |
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| Abstract: | A novel structural damage identification method without excitation measurement was proposed.Empirical mode decomposition(EMD) was applied to structural damage identification.Through seeking the vibration transmissibility of vibration response signal intrinsic mode function(IMF),a set of structural damage identification parameters were constructed.Through the dynamic testing on different pre-damage degrees of glass curtain walls,the intrinsic mode function vibration transmissibilities under different damage ... |
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| Keywords: | empirical mode decomposition intrinsic mode function vibration transmissibility damage identification glass curtain wall |
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