基于MapleSim独立前悬架K&C特性对比分析

Comparative Analysis of K&C Characteristics of Independent Front Suspensions Based on Maple Sim

悬架刚体运动学和弹性运动学特性(Kinematics and Compliance,简称K&C特性)对车辆操纵稳定性影响是至关重要,采用不同形式的导向机构的悬架系统其K&C特性不同。将K&C特性作为唯一输入变量,考察非公路车辆不同形式悬架的K&C特性对操纵稳定性的影响。基于MapleSim分别建立复合连杆式、烛式、单纵臂式和双叉臂式等四种形式的独立前悬架模型,分别施加位移载荷和力载荷获取K特性和C特性并进行对比。结果表明:复合连杆式和双叉臂式悬架的K特性优于另外两种形式;四种悬架的C特性指标数值与公路车辆悬架相比均很小;C特性结果显示,非公路自卸车C特性指标数值较小,对于此类车辆悬架运动学特性主要受K特性的影响。研究方法和结论为此车辆前悬架设计研究提供参考。

Compliance and Kinematics （K＆C） of suspension is very important to influence the stability of the vehicle, and the different linkage forms of the suspension system hare different characteristics. With K＆C characteristics as the only input variable, the influence of K＆C characteristics on the handing stability of the different forms suspension of the off-highway vehicle was analyzed. Based on MapleSim, independent front suspension models of composite rod, candle type, single longitudinal arm and dual arm four forms were built. K characteristics and C characteristics were obtained by applying the displacement load and force load respectively. The results show that compared to the composite rod and double fork arm type suspension K characteristics are better than those of the other two forms; all four form suspensions , C characteristics numerical and highway vehicle suspension are very small; properties of C results show, off-highway self-unloading C characteristic index value is small, for such vehicle suspension kinematic characteristics is mainly affected by the influence of the characteristic K. Research methods and conclusions provide reference for the design of front suspension of vehicle.