| 多处损伤结构的损伤诊断 |
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| 引用本文： | 朱四荣,李卓球.多处损伤结构的损伤诊断[J].武汉理工大学学报,2002,24(7):21-23. |
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| 作者姓名： | 朱四荣 李卓球 |
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| 作者单位： | 武汉理工大学 |
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| 基金项目： | 国家自然科学基金资助项目 (5 0 0 780 42 ) |
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| 摘 要： | 利用损伤前后结构自由振动有限元离散方程的变化，确定结构的损伤位置；并以低阶模态作为状态变量，由量小二乘法建立目标函数，通过非线性迭代得到损伤程度的识别值。由算例结果可知，此方法能迅速识别结构的离散损伤。
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| 关 键 词： | 损伤诊断 低阶模态 非线性迭代 结构力学 自由振动 损伤程度 离散损伤 |
| 文章编号： | 1671-4431(2002)07-0021-03 |
| 修稿时间： | 2001年10月12 |
Identification in Structures with Various-point Damages |
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| Zhu Sirong\ Li Zhuoqiu School of Science,WUT,Wuhan ,China..Identification in Structures with Various-point Damages[J].Journal of Wuhan University of Technology,2002,24(7):21-23. |
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| Authors: | Zhu Sirong\ Li Zhuoqiu School of Science WUT Wuhan China |
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| Affiliation: | Zhu Sirong\ Li Zhuoqiu School of Science,WUT,Wuhan 430070,China. |
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| Abstract: | The damage identification of structures is studied with real-time forced vibration in this paper.The location of damage is identified by the changes of the mathematical dynamic free-vibration equations.The alternate iterative method in the nonlonear mininmizing process has been presented to determine the degree of the damages, on the base of finite element method and the least square method.From the identification results of ilustration by this method indicate that the method is efficient and rapid. |
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| Keywords: | damage identification \ lower mode \ nonlinear iteration |
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