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以多体动力学理论为基础,利用机械动力学分析软件ADAMS建立某轿车的整车虚拟样机模型。研究悬架系统对乘员舒适性及车辆对道路破坏程度的影响规律。根据行驶平顺性和道路友好性各自评价指标进行了数值计算,分析了行驶车速、悬架弹簧刚度和减振器阻尼对车辆平顺性和道路友好性的影响,最后得到了优化的悬架参数。通过比较优化前后的车辆对道路的动载荷,提出了对车辆悬架设计与使用方面的有益建议。
Based on multi-body dynamics theory, a vehicle virtual prototype model of a car is established by using the mechanical dynamics analysis software ADAMS. Study the influence of suspension system on occupant comfort and the degree of vehicle damage to the road. The influence of running speed, suspension spring stiffness and damper damping on vehicle ride comfort and road friendliness is analyzed based on the evaluation indexes of ride comfort and road friendliness. At last, the optimized suspension parameters are obtained. By comparing the dynamic loads of the vehicles before and after the optimization on the road, some useful suggestions on the design and the use of the vehicle suspension are put forward.