独立悬架前轮定位参数对操纵稳定性影响分析  

Effects Analysis of Front Axle’s Alignment Parameters Change on Handling Stability

作　　者：郑希江[1] 纪少波[2] 李淑廷[1] 张宏伟[1] ZHENG Xi-jiang;JI Shao-bo;LI Su-ting;ZHANG Hong-wei(Laiwu Vocational and Technical College,Shandong Laiwu 271100,China;School of Energy and Power Engineering,Shandong University,Shandong Ji’nan 250061,China)

机构地区：[1]莱芜职业技术学院,山东莱芜271100 [2]山东大学能源与动力工程学院,山东济南250061

出　　处：《机械设计与制造》2019年第7期263-267,共5页Machinery Design & Manufacture

基　　金：山东省科技发展计划项目(2011GGX10506);国家自然科学基金资助项目(50876055)

摘　　要：前轮定位参数的改变对整车操纵稳定性会产生不同程度的影响。基于虚拟仿真技术,应用ADAMS与Solidworks建模相结合的方法建立单纵臂悬架整车参数化仿真模型,得到前后悬架的刚度和速度特性曲线。根据所选参数变量进行参数化仿真,得到外倾角、前束角以及轮距随轮跳的变化曲线,从而验证仿真模型的正确性。利用AMESim和ADAMS进行联合仿真,通过更改前桥初始定位参数,分别进行整车的稳态回转仿真试验、双移线仿真试验和方向盘角阶跃输入仿真试验。结果表明当主销后倾角增大时,车辆的横摆角速度和侧向加速度均减小,侧倾角响应时间变长,明显的提高了整车的操纵稳定性;单纵臂悬架在运动过程中,主销后倾角呈现动态的变化过程,通过优化使后倾角在一个限定的范围内,起到很好的作用。为同类单纵臂悬架选型及改进设计提供参考。Change of front axle’s alignment parameters has different effects on the vehicle handling stability. A parameterized simulation model of the truck with single-longitudinal arm suspension and a united steering mechanism were separately set up based on ADAMS and Solidworks, so stiffness and speed characteristic curves of front and rear suspensions were obtained. According to the selected parameters, parametric simulation was carried out, which got change curves of camber angle, toe angle and wheel tread with the jump, in order to verify the correctness of the simulation model. Through changing the front axle initial alignment parameters, vehicle steady steering simulation test, double lane change test and simulation direction wheel angle step input simulation test were analyzed in the ADAMS and AMESim co-simulation model. The results show that the yaw rate and lateral acceleration of the vehicle are decreased when the angle of the main pin is increased, the side angle response time is longer, and the single arm suspension is in motion, which provides reference for the selection and improvement design of the same kind of single longitudinal arm suspension.

关 键 词：车辆 单纵臂悬架 前轮 定位参数 操纵稳定性 模型 

分 类 号：TH16[机械工程—机械制造及自动化] U463.212[机械工程—车辆工程]