| 基于模态应变能法识别板类结构损伤的数值研究 |
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| 引用本文： | 王锋,李毅谦,李传习. 基于模态应变能法识别板类结构损伤的数值研究[J]. 长沙理工大学学报(自然科学版), 2006, 3(1): 27-30,40 |
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| 作者姓名： | 王锋 李毅谦 李传习 |
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| 作者单位： | 1. 长沙理工大学,桥梁与结构工程学院,湖南,长沙,410076
2. 中国路桥集团,北京,100011 |
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| 摘 要： | 应用模态应变能理论得到了能用于板类结构损伤的识别指标．假定结构存在不同位置和不同程度的损伤，运用Ansys进行有限元分析，得到板损伤前后的前五阶模态．然后再运用Mathematics软件，编程计算结构的各单元的损伤指标．数值模拟结果表明，损伤指标在损伤单元处的数值是最大的．因此，采用本研究提出的损伤指标，对板类结构进行损伤定位识别是可行的．
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| 关 键 词： | 板类结构 损伤识别 模态应变能 |
| 文章编号： | 1672-9331（2006）01-0027-04 |
| 收稿时间： | 2005-06-29 |
| 修稿时间： | 2005-06-29 |
Numerical research on plate-like structure damage identification based on modal strain energy |
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| WANG Feng,LI Yi-qian,LI Chuan-xi. Numerical research on plate-like structure damage identification based on modal strain energy[J]. Journal of Changsha University of Science and Technology(Natural Science), 2006, 3(1): 27-30,40 |
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| Authors: | WANG Feng LI Yi-qian LI Chuan-xi |
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| Affiliation: | 1. College of Bridge and Structure Engineering, Changsha University of Science and Technology, Changsha 410076, China; 2. China Road and Bridge Corporation, Beijing 100011, China |
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| Abstract: | Based on the theory of modal strain energy, a damage index is deduced to identify the plate-like structure damage. Supposing that there lie some different damage positions and extents in structure, the Software Ansys is applied to obtain the first five modes of plate structure before or after damage using Finite Element Analysis, and then every element damage index in structure is calculated using the Software Mathematics program. The numerical results show that the damage index value in the damage element is the biggest one. It is concluded that the proposed damage index is feasible for the damage localization of plate-like structures. |
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| Keywords: | plate-like structure damage identification modal strain energy |
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