| 基于应变模态及结构优化技术的结构损伤程度识别方法 |
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| 引用本文： | 彭细荣,路新瀛,隋允康,陈肇元.基于应变模态及结构优化技术的结构损伤程度识别方法[J].北京工业大学学报,2009,35(2):145-151. |
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| 作者姓名： | 彭细荣 路新瀛 隋允康 陈肇元 |
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| 作者单位： | 清华大学深圳研究生院,深圳,518055;北京工业大学,工程数值模拟中心,北京,100124 |
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| 基金项目： | 中国建筑工程总公司项目 |
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| 摘 要： | 应用结构优化技术对结构损伤程度进行识别.在结构损伤区域内,以每个单元拟识别的损伤程度指标作为设计变量,以结构局部区域内损伤前后应变模态差极小为目标函数,建立结构识别模型,采用序列线性规划法求解识别模型,算例表明此解可以很好地定位结构损伤的位置及程度.
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| 关 键 词： | 应变模态 结构识别问题 损伤程度 |
Damage Degree Identification Method Based on Strain Mode and Structural Optimization |
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| PENG Xi-rong,LU Xin-ying,SUI Yun-kang,CHEN Zhao-yuan.Damage Degree Identification Method Based on Strain Mode and Structural Optimization[J].Journal of Beijing Polytechnic University,2009,35(2):145-151. |
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| Authors: | PENG Xi-rong LU Xin-ying SUI Yun-kang CHEN Zhao-yuan |
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| Affiliation: | PENG Xi-rong~1 LU Xin-ying~1 SUI Yun-kang~2 CHEN Zhao-yuan~1 1.Graduate School at Shenzhen,Tsinghua University,Shenzhen 518055,China,2.Simulation Center for Engineering,Beijing University of Technology,Beijing 100124 |
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| Abstract: | Structural damages are identified by the technique of structural optimization.In the damaged region,elemental damage indexes are selected as design variables,local strain mode difference between un- damaged and damaged structure is minimized.The structural identification model is solved by the series linear programming.The solution is the distribution of elemental damage indexes in the damaged region.Numerical simulation indicated that the proposed method could locate damages and estimate damage degree corr... |
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| Keywords: | strain mode structural identification problem damage degree |
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