应用遗传算法和散射Lamb波的板结构损伤识别

被引:13
作者
严刚
周丽
机构
[1] 南京航空航天大学结构强度研究所
关键词
结构健康监测; 损伤识别; 微种群遗传算法; 散射Lamb波; 板结构;
D O I
10.16385/j.cnki.issn.1004-4523.2007.03.005
中图分类号
V214.3 [板、壳、梁];
学科分类号
08 ; 0825 ;
摘要
提出了一种基于遗传算法和散射Lamb波的损伤识别方法,能同时识别板结构中损伤的位置和程度。该方法将结构损伤识别转换为优化问题,结合Lamb波的散射模型,通过最小化理论计算结果与实际量测信息之间的差别,遗传算法自适应地搜索出描述损伤位置和程度的参数。为了提高运算效率,采用微种群遗传算法来加速收敛性。数值仿真结果表明了所提出方法的有效性和可应用性。
引用
收藏
页码:291 / 296
页数:6
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