| 对几种损伤识别方法的噪声敏感性分析 |
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| 引用本文： | 冯坤,杨永春.对几种损伤识别方法的噪声敏感性分析[J].武汉造船,2012(1):73-76. |
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| 作者姓名： | 冯坤 杨永春 |
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| 作者单位： | 中国海洋大学工程学院,山东青岛266100 |
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| 摘 要： | 以简支梁、三维框架结构、Benchmark框架模型、海洋平台结构为分析对象,选择柔度差值曲率法、模态应变能法、改进后的模态应变能法和交叉模型交叉模态方法（CMCM）等4种结构损伤定位指标,对分析对象的抗噪声干扰能力进行对比分析。分析结果表明,改进后的模态应变能法和CMCM方法对于结构损伤定位均有较好的抗噪性。
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| 关 键 词： | 模态噪声 损伤识别 模态参数 模态应变能 柔度差值曲率 |
Noise Sensitivity Analysis of Several Damage Detection Methods |
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| FENG Kun,YANG Yong-chun.Noise Sensitivity Analysis of Several Damage Detection Methods[J].Wuhan Shipbuilding,2012(1):73-76. |
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| Authors: | FENG Kun YANG Yong-chun |
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| Institution: | ( School of Engineering, Ocean University of China, Qingdao Shandong 266100, China) |
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| Abstract: | The simply supported beam, three-dimensional five-story frame, Benchmark framework model and offshore platform structure were taken as analysis objects, to compare the ability to suppress noise interference among the flexibility difference curvature method, the modal strain energy methods, and CMCM method. The results showed that the modified modal strain energy method and CMCM method have a good anti-noise property in damage location identification for both one-dimensional structure and frame structure. |
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| Keywords: | noisy modal damage detection modal parameters modal strain energy the flexibility difference curvature |
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