农用沙滩车的悬架与转向系统优化研究

Optimization of suspension and steering systems for agricultural ATV

针对某国产沙滩车在应用于农业生产研发、进行行车实验研究时,存在前轮侧滑量偏大引起轮胎磨损较大、转向横拉杆容易出现断裂等问题。通过对原车的结构特点、车辆参数和使用状态等方面进行了研究,对引起上述问题的原因进行了综合分析,最终确定了上下控制臂球销中心点等10个空间位置坐标作为控制目标要素,在ADAMS/Car模块中建立优化后的悬架与转向系统虚拟样机模型,采用多体运动学分析方法和多目标实验优化设计方法,对原车的悬架与转向系统存在的问题进行解决与优化,研究结果表明,优化后的车辆在轮胎磨损和操纵稳定性方面都有了较大改善,并对车辆在挂载与非挂载情况下的稳定性能进行了比较。

Aiming at to solve the problem of including significant wear of front wheels caused by major sideslip and vulnerability to fracture of the steering tie rods,in the running test. A virtual prototype model with optimized suspension and steering systems was bulk in the ADAMS/ Car module, and the methods of multi-body kinematic analysis and muhi-objective optimization and design experiments were employed to tackle the problems and optimize the suspension and steering systems of the original ATV. The results indicate that after optimization of the vehicle has greatly improved in tire wear and handling stability, the vehicle under the condition of mount and non- mount of stable perform- ance are compared.