| 郭佳,管德清.基于梁连续抗弯刚度与小波变换的结构损伤识别方法研究[J].计算力学学报,2022,39(5):608~613 |
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| 基于梁连续抗弯刚度与小波变换的结构损伤识别方法研究 |
| Research on structural damage identification method based on continuous bending stiffness of the beam and wavelet transform |
| 投稿时间：2021-04-20 修订日期：2021-09-18 |
| DOI：10.7511/jslx20210420001 |
| 中文关键词: 边缘损伤识别 小波变换 梁连续抗弯刚度 数值模拟 结构试验 |
| 英文关键词:edge damage identification wavelet transform beam structural continuous bending stiffness numerical simulation structural experiment |
| 基金项目:国家自然科学基金(51378079);湖南省研究生科研创新项目(CX20190636)资助项目. |
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| 中文摘要: |
| 为了解决基于小波变换系数难以识别结构边缘损伤的问题,以及试验中损伤对周边的影响导致小波系数难以精确定位损伤位置的问题,提出了基于梁连续抗弯刚度与小波变换的结构损伤位置识别方法。该方法结合梁结构连续抗弯刚度与小波系数边缘的特点,在未知无损梁结构振动参数的情况下,能有效识别出梁结构边缘损伤且能准确定位试验中梁结构的损伤,通过损伤梁的数值模拟与试验证明了该方法的正确性。 |
| 英文摘要: |
| To solve the problem that the structural edge damage is difficult to be identified based on the wavelet transform coefficient and the failure of the wavelet coefficient to accurately identify the damage location caused by the influence of the damage on the surroundings in the experiment,a structural damage identification method based on the continuous bending stiffness of the beam and the wavelet transform is proposed.The proposed method combines the beam's continuous bending stiffness with the edge of wavelet coefficients,which makes the beam structural edge damage identifiable,and the beam damage can be accurately located in the experiment without information of the undamaged vibration parameters.The correctness of the proposed method is proved by numerical simulation and the experiment of the beam. |
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