曲率模态及其在汽车后桥损伤识别中的应用  

Application of Curvature Mode Shape to Damage Identification of Rear Axle

作　　者：马立英[1] 周鋐[1] 彭晓俊[1] 

机构地区：[1]同济大学汽车学院,上海201804

出　　处：《同济大学学报（自然科学版）》2011年第8期1208-1211,共4页Journal of Tongji University:Natural Science

摘　　要：引入曲率模态分析方法,以某轿车后桥为研究对象,通过试验模态分析获得损伤前后结构模态参数,计算曲率模态,选取平均曲率模态绝对差作为指标,对轿车后桥进行损伤识别.结果表明,该方法对结构局部变化敏感,可以识别损伤位置及损伤程度,为车辆结构件损伤识别提供了一种可行的研究方法.Curvature mode theory was introduced to the damage identification of a rear axle of a car.The modal test analysis of rear axle was done.Results shows that the change of curvature mode shape has an obvious effect on identifing the local damage.The study results provide a practicable research method for structure damage identification of automobile components.

关 键 词：曲率模态 损伤识别 模态分析 轿车后桥 

分 类 号：U463.1[机械工程—车辆工程]