轿车车头子系统的结构动力修改

Structural dynamics modification of car front-body subsystem is crucial to the laboratory road simulation test in which it is used for testing instead of car body. Combining the results of modal experiment analysis on body-in-white and the results of finite element analysis, structural dynamics modification on the car front-body of a monocoque body has been made based on optimization algorithm. Additionally, laboratory test results show that the modified car front-body has the same structural dynamic characteristics with the body for laying a foundation for further laboratory road simulation test.