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

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.

Abstract:

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 .