麦弗逊前悬架硬点参数的灵敏度分析和优化  

Sensitivity analysis and optimization for the hard-point parameters of McPherson front suspension

作　　者：宋晓琳[1] 毛开楠[1] 李叶松[1] 刘禹亭 

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,长沙410082 [2]长春孔辉汽车科技有限公司,长春130000

出　　处：《现代制造工程》2011年第6期106-110,共5页Modern Manufacturing Engineering

基　　金：教育部长江学者与创新团队发展计划资助项目(531105050037);湖南大学汽车车身先进设计制造国家重点实验室自主课题资助项目(60870004)

摘　　要：针对厂家反映的汽车前轮磨损严重的问题,以国产某轿车为例,应用ADAMS/Car建立该车的前悬架仿真模型,并以目标样车前轮前束角、前轮外倾角、轮距和轴距随轮跳的变化等K&C特性曲线的斜率为目标,在ADAMS/Insight模块中对该前悬架硬点进行整体灵敏度分析。根据灵敏度分析结果,选择对前轮磨损程度影响较大的前束角、外倾角以及轮距和轴距4个参数为设计目标,选取较为灵敏的硬点进行优化。通过以最少的前悬架硬点参数的调整,达到使该车前悬架K&C特性曲线趋近于目标样车K&C特性曲线的目的。这样既解决了前轮磨损严重的问题,又提高了该车型的综合性能。According to the front-wheel wear and tear problem reflected by manufacturer, made a car which is made in China as an example,establishing a car＇s front suspension model by ADAMS/Car. Making a target sample vehicle＇s performance curve slope as a goa/, the overall sensitivity of the front suspension hard points analysis were made in the ADAMS/Insight. Based on the results of sensitivity analysis, choose the four parameters toe-in angle, camber angle, tread, wheelbase, having an important effect on the front-wheel wear, as the design objective, then some more sensitive hard-points were optimized. By adjusting the front suspension hard-points methods to make the performance curve closer to the target sample vehicle＇s. This will not only solve the serious problems that front-wheel wear and tear, but also improve the overall performance of the model.

关 键 词：麦弗逊前悬架 灵敏度分析 优化 

分 类 号：TH16[机械工程—机械制造及自动化] TP391[自动化与计算机技术—计算机应用技术]