| 基于频响函数和遗传算法的结构损伤识别研究 |
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| 引用本文： | 邹万杰,瞿伟廉.基于频响函数和遗传算法的结构损伤识别研究[J].振动与冲击,2008,27(12). |
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| 作者姓名： | 邹万杰 瞿伟廉 |
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| 作者单位： | 1. 武汉理工大学土木工程与建筑学院,武汉,430070;广西工学院土木系,柳州,545006
2. 武汉理工大学土木工程与建筑学院,武汉,430070 |
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| 摘 要： | 提出一种基于频响函数和遗传算法的结构损伤识别方法.以单元刚度折减因子为遗传算法的优化变量,以测试频响函数和计算频响函数的形状相关系数来构造遗传算法的优化目标函数和适应度函数;为克服二进制编码的缺点,采用浮点数编码方案;最后通过一个桁架结构模型进行数值模拟,计算结果表明,即使在考虑一定测量噪声水平的情况下,仍然能够准确识别出结构的多处损伤,验证了该方法的有效性和可行性.
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| 关 键 词： | 频响函数 遗传算法 形状相关系数 损伤识别 |
STRUCTURAL DAMAGE IDENTIFICATION BASED ON FREQUENCY RESPONSE FUNCTION AND GENETIC ALGORITHM |
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| ZOU Wan-jie,QU Wei-lian.STRUCTURAL DAMAGE IDENTIFICATION BASED ON FREQUENCY RESPONSE FUNCTION AND GENETIC ALGORITHM[J].Journal of Vibration and Shock,2008,27(12). |
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| Authors: | ZOU Wan-jie QU Wei-lian |
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| Affiliation: | ZOU Wan-jie1,2,QU Wei-lian1(1. School of Civil Engineering , Architecture,Wuhan University of Technology,Wuhan 430070,China,2. Department of Civil Engineering,Guangxi University of Technology,Liuzhou 545006,China) |
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| Abstract: | A combined method for structural damage identification based on frequency response function(FRF)and genetic algorithm(GA)was presented.The reducing factors of element stiffnesses were used as the optimization variables,and the cross signature assurance criterion(CSAC)of the measured FRF and the analytical FRF was used to construct the optimization object function and the fitness function of GA.In order to avoiding the weakness of binary encoding,the floating point number encoding was used in GA.A numerical ... |
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| Keywords: | frequency response function(FRF) genetic algorithm(GA) cross signature assurance criterion(CSAC) damage identification |
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