3种结构动力损伤诊断方法的计算性能对比  

Comparison of calculated performance of three structural damage diagnosis method

作　　者：李文雄[1] 叶云青[1] 陈存恩[1] 

机构地区：[1]华南农业大学水利与土木工程学院,广东广州510642

出　　处：《武汉大学学报（工学版）》2011年第1期99-103,共5页Engineering Journal of Wuhan University

摘　　要：本文对灵敏度分析法、遗传算法和灵敏度遗传算法的计算性能展开了研究,为算法的进一步应用提供依据.对平面杆系结构进行数值模拟分析,考虑振动数据量和测试误差对计算结果的影响,比较不同条件下3种计算方法的效果,总结出3种计算方法的各自特点和适用条件:1)损伤数目少,振动参数充足并且准确时,灵敏度分析法效果较好;2)损伤数目多,振动参数不充足或存在误差时,灵敏度遗传算法效果较好.In this paper,some researches are finished on sensitivity analysis method,genetic algorithm and sensitivity genetic algorithm for providing the basis on further application of the algorithm.The numerical simulation researches of a 2D framed structure is completed considering the influence of the quantity of vibration parameter data and the error of test data.The effect of the three algorithms in different conditions is compared and the features and suitable conditions of the three algorithms are listed：1.Sensitivity analysis method is suitable for the situation with a small number of damages and enough exact vibration parameters.2.Sensitivity genetic algorithm is suitable for the situation with a large number of damages and enough exact vibration parameters.

关 键 词：灵敏度分析 遗传算法 损伤诊断 动力反演计算 

分 类 号：TU312.3[建筑科学—结构工程]