关键词: 车辆工程, 汽车悬架, 橡胶衬套, 灵敏度分析, 衬套刚度

Abstract:

The calculation of bushing stiffness was introduced in the software ADAMS/Car, and based  on it a rigidflex coupling model was built for the automotive double wishbone suspension system.The sensitivity analyses of the siffness of different rubber bushings were done by the software ADAMS/Insight, and the influences of the rubber bushing stiffness on the wheel alignment parameters and the suspension stiffness were analyzed, and the change patterns of the wheel alignment parameters versus the rubber bushing stiffness were obtained. Taking the scale factors of the bushing forces that affects significantly on the wheel alignment parameters as the design variables, the camber angle, the toe angle, the kingpin inclination angle and the wheel track as the optimization targets, for the different scale factors of different bushings, the workspaces were achieved automatically by ADAMS/Insight, and the simulating calculation was performed. The wheel alignment parameters were optimized by filtering the workspaces according to the target functions.

Key words: vehicle engineering, automotive suspension, rubber bushing, sensitivity analysis, bushing stiffness