基于虚拟样机技术的汽车平顺性仿真研究

以某双横臂悬架汽车为研究对象,运用虚拟样机技术,建立前悬架虚拟样机模型.通过虚拟仿真,得到其前轮定位参数,揭示其运动学规律.基于ADAMS/Car建立整车仿真模型;建立粗糙水泥路面随机激励及脉冲路面激励,并分别进行汽车平顺性仿真.得到相应的人体振动加权加速度均方根值和座椅处的最大垂向加速度,分别对随机路面激励和脉冲路面激励下的汽车平顺性进行评价.结果表明:随机路面激励下汽车具有较好的平顺性,脉冲路面激励下对乘员健康无危害.

Simulation Research on Vehicle Ride Comfort Based on Virtual Prototype Technique

he virtual prototype model of a double wishbone front suspension is built using virtual prototype technology. By means of virtual simulation, the front wheel alignment parameters are obtained, which can help to discover the law of the kinematics. A simulation model for the full vehicle is built based on ADAMS/Car; rough cement pavement random road excitation and pulse road excitation are established and simulations of vehicle ride comfort for them are carried out, respectively. The results help to obtain weighted acceleration root-mean-square value of human body vibration under random rode excitation and maximum vertical acceleration of seat under pulse rode excitation. And then the vehicle ride comfort of random road excitation and pulse road excitation are evaluated, respectively. The results show that the vehicle ride under random rode excitation is more comfortable, and that the ride under pulse rode excitation is not detrimental to passengers＇ health.