基于弹性衬套和柔性零部件的车轮定位参数仿真试验

Simulation Trials of Wheel Alignment Parameters Based on Elastic Bushing and Flexible Parts

为了分析悬架中弹性衬套替换刚性铰接及主要承载零部件的柔化处理对车轮定位参数的影响,以多体动力学理论为基础,在Adams中建立了某车双横臂独立悬架多刚体模型I,对三因素弹性衬套替换刚性铰接以及下横臂和横向稳定杆的柔化处理的影响进行仿真试验.仿真结果说明:3个因素对车轮定位参数有很大的影响.在模型I的基础上综合考虑上述3个因素建立了模型II并进行悬架运动学分析,揭示了车轮定位参数的变化特性,为悬架的开发设计奠定了基础.

Based on multi-body dynamics theory,in order to analyze the impact of wheel alignment parameters caused by elastic bushing replacement of rigid hinge,and flexible treatment towards the main parts which bear force and torque in the suspension,the rigid simulation model（Model I） of double-wishbone independent suspension of a certain vehicle is established using Adams/Car module.By means of simulation trials such as replacement of rigid hinge with resilient bushing,as well as flexible treatment towards the upper/lower control arm and the horizontal stabilizer bar in the established rigid suspension model,the results explain that the replacement of rigid hinge with resilient bushing,along with the flexible treatment of the lower control arm and horizontal stabilizer bar,have great impact to wheel alignment parameters.Based on Model I,taking the above three factors into account to establish suspension Model II for kinematics analysis,the results reveal the variation characteristic of wheel alignment parameters,which lays a sound foundation for the development and design for the suspension.