基于参数特性前桥单纵臂独立悬架优化分析  

Optimization Analysis of Single-Longitudinal Arm Suspension Based on Parameter Characteristics

作　　者：屈福康 肖金[1] 程伟[1] QU Fu-kang;XIAO Jin;CHENG Wei(Huali College, Guangdong University of Technology, Guangdong Guangzhou 511325, China)

机构地区：[1]广东工业大学华立学院,广东广州511325

出　　处：《机械设计与制造》2019年第4期211-213,219,共4页Machinery Design & Manufacture

基　　金：广东省教育厅2016年重点培育学科项目"2016年广东省高校重点建设学科"(粤教研函[2017]1号)

摘　　要：悬架系统的运动学特性最直接的是在车轮定位参数的变化趋势上反映出来。采用虚拟样机技术,在ADAMS中搭建汽车前桥单纵臂悬架的多刚体动力学模型,对其运动学和动力学特性进行分析,获得所研究悬架的定位参数随车轮上下跳动的变化规律。在分析的过程中要考虑纵臂悬架的变形对整车性能的影响,将纵臂做成可变形的柔性体并进行动力学分析,从而模仿纵臂实际工作中的变形,使研究得出的结果更加接近实际。结果表明前桥悬架的主销内倾角、车轮外倾角、车轮侧滑及前束变化很小,几乎对整车性能没有影响;但主销后倾角变化较大。通过对主销后倾角的优化分析,减小主销后倾角的变化,同时又不影响悬架的其它性能参数及不改变悬架尺寸的情况下,可以通过加装横向稳定杆来解决车轮过程中发生的主销后倾变化相对过大的问题。对悬架系统运动学和动力学特性的分析及优化设计,为进一步改进提供依据。The kinematic characteristics of suspension first reflected in the change trend of wheel alignment parameters. The article using virtual prototyping technology, in the ADAMS environment, Multi-rigid-body dynamic model of the front axle is established, and gives it the kinematic simulation analysis and dynamic analysis. Vibrational regulation of the wheel alignment parameters was obtained with the upper and down movement of the wheel. In the course of the analysis of the longitudinal arm suspension to the whole vehicle performance, the deformation must be considered. We do the dynamics analysis of longitudinal arm by making it to be a flexible body to imitate the practical deformation during its work, so that the results of research are much closer to reality. In the post-processing, vibrational regulation of wheel alignment parameters and the position of roll center and trim center and etc. is analyzed. These provide the basic study for further improvements.

关 键 词：汽车 单纵臂悬架 运动学特性 模型 参数 特性 

分 类 号：TH16[机械工程—机械制造及自动化] U463.33[机械工程—车辆工程]