橡胶衬套刚度对悬架运动学的影响  

The Influence of Rubber Bushing Stiffness to Suspension Kinematics

作　　者：李林华[1] 宋晓琳[1] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082

出　　处：《微计算机信息》2012年第1期142-144,共3页Control & Automation

基　　金：湖南大学汽车车身先进设计制造国家重点实验室自主研究课题(61075004)项目资助;中国高水平汽车自主创新能力建设项目资助

摘　　要：橡胶衬套在现代汽车上的广泛应用对整车操纵稳定性和平顺性造成了很大的影响。为减少由于橡胶衬套引起的悬架运动学特性的变化,论文在ADAMS/View中建立了包含有橡胶衬套的麦弗逊悬架。通过ADAMS/Insight对各个衬套的刚度进行灵敏度分析,选取刚度变化对车轮定位参数影响较大的衬套刚度作为优化变量,以车轮前束角、外倾角和轮距作为优化目标。在Matlab中运用遗传算法调用ADAMS中的脚本文件,对橡胶衬套进行优化得到最优刚度值。经比较分析,优化后悬架定位参数变化范围减小。由此通过优化橡胶衬套刚度改善了悬架运动学特性。The extensive application of rubber bushing in modern car have had a great impact on vehicle handling stability and ride comfort.In order to reduce changes of suspension kinematic characteristics,a McPherson suspension model with rubber bushing is created in ADAMS /View.By ADAMS /Insight,stiffnesses of each bushing have been analysed in sensitivity,and select stiffnesses who have a greater influence to wheel alignment parameters as optimal variables,choose toe angle,camber and wheelbase as the optimization target.Invoking the ADAMS script files by using genetic algorithms in Matlab,rubber bushing stiffnesses have been optimized to get the optimal.By comparative analysis,ranges of suspension alignment parameters reduce after optimizing.By optimizing rubber bushing stiffnesses,suspension kinematic characteristics have been improved.

关 键 词：橡胶衬套 悬架运动学特性 遗传算法 

分 类 号：U463.1[机械工程—车辆工程]