Abstract: To address the problem that the roll steer characteristics of the rear four-link suspension of a vehicle are unfavorable to the understeer of the whole vehicle, this paper combines the K&C characteristic test and simulation analysis results of the rear four-link suspension of the vehicle, establishes an ADAMS suspension model of the rear four-link suspension, and carries out optimization iterations in combination with engineering practice. Finally, the roll steer is optimized without obvious changes in other suspension performances, and the understeer degree of the whole vehicle is improved. This study provides an effective method for the subsequent understeer optimization of vehicles with this suspension. The relevant conclusions are verified by steady-state circular test simulation and have engineering application value.

Key words: multi-link suspension; roll steer; ADAMS

摘要： 为解决某车型后四连杆悬架侧倾转向特性不利于整车不足转向的问题，文章结合该车 型后四连杆悬架 K&C 特性试验及仿真分析结果，建立后四连杆悬架的 ADAMS 悬架模型，结 合工程实际进行优化迭代。最终在保证悬架其他性能无明显变化的前提下优化侧倾转向，提 高整车不足转向度，该研究为后续该悬架车型不足转向优化提供了有效方法，相关结论经稳 态回转试验仿真验证，具有工程应用价值。

关键词: 多连杆悬架；侧倾转向；ADAMS