| 利用基本模态振型对梁结构裂缝识别的小波方法研究 |
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| 引用本文： | 张兵,张会占,陈建荣.利用基本模态振型对梁结构裂缝识别的小波方法研究[J].安徽建筑,2009,16(2). |
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| 作者姓名： | 张兵 张会占 陈建荣 |
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| 作者单位： | 1. 北京中色北方建筑设计院,北京,100041
2. 汕头大学,广东,汕头,515063 |
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| 摘 要： | 文章首先讨论了含裂缝梁结构的柔度矩阵的变化;其次,通过选择不同模态振型函数进行小波变换分析,总结了不同模态振型在梁结构裂缝检测中的不同规律;最后,文章以悬臂梁为例,选用Gaus2小波对悬臂梁基本振型进行小波变换,进而对悬臂梁中的裂缝进行识别,裂缝深度与Lipschitz指数进行拟合。
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| 关 键 词： | 模态振型 小波变换 多项式拟合 Lipschitz指数 |
Crack Beam Structure Detected by Wavelet Transformation Method with Basic Mode Shape |
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| Zhang Bing et al.Crack Beam Structure Detected by Wavelet Transformation Method with Basic Mode Shape[J].Anhui Architecture,2009,16(2). |
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| Authors: | Zhang Bing |
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| Affiliation: | North Architectural Design Institute of CNFC;Beijing 100041;China |
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| Abstract: | The change of flexibility matrix contained in the crack beam structure is discussed; based on the wavelet-transform analysis with different mode shape functions, different rules of different mode shapes in the test of crack beam structure are summed up; wavelet transformation (with Gaus2 Wavelet) of the basic mode shape of a cantilever beam is carried out to detect cracks in the cantilever beam. The method presented here may also be used to detect cracks in other structures. |
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| Keywords: | mode shape vavelet transformation polynomial fitting Lipschitz index |
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