汽车排气系统吊钩位置优化

Automobile exhaust system hook location optimization

汽车排气系统吊钩振动通过减震橡胶吊耳与车身相连,利用HYPERMESH和MSC.NASTRAN软件对排气系统进行有限元建模以及其模态分析,并根据平均驱动自由度位移(ADDOFD)法对排气系统吊钩位置进行了优化,最后结合LMS软件实际振动测试进行验证。

automobile exhaust system hook is connected to the body by vibration damping rubber, using HYPERMESH and MSC. NASTRAN to build exhaust system FEM and its modal analysis, and according to the average driving DOF displacement（ADDOFD） method to optimize the location of the exhaust system hook, Finally combined with LMS software actual vibration testing for validation.