汽车转向轮摆振分岔特性的数值分析  

Numerical analysis of bifurcation character of steering wheel shimmy

作　　者：李胜[1] 林逸[2] 

机构地区：[1]吉林大学汽车工程学院,吉林长春130022 [2]北京理工大学机械与车辆工程学院,北京100081

出　　处：《吉林大学学报（工学版）》2005年第1期7-11,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金GM基金资助项目(5012225.1).

摘　　要：以某国产非独立悬架汽车转向轮摆振的 3自由度非线性模型为例 ,详细讨论了汽车转向轮摆振分岔特性的数值分析过程。结果表明 :在临界摆振车速处系统发生了Hopf分岔 ,随后出现的摆振是一种稳定的极限环振动现象 。A detailed numerical analysis of the bifurcation character of the vehicle steering wheel was performed to exemplify the 3 degree-of -freedom non-linear steering wheel shimmy model for a domestic motor vehicle with dependent suspension. Results showed that the steering wheel shimmy is a vibration of the stable limit cycle which appears after the Hopf bifurcation occurs at the critical vehicle speed, and the results derived from the analysis bifurcation speed and the shimmy amplitude are in good agreement with those from road tests.

关 键 词：车辆工程 转向轮摆振 HOPF分岔 极限环 数值分析 

分 类 号：U463.23[机械工程—车辆工程]