考虑万向节间隙的汽车摆振系统动力学建模  

Dynamics Modeling of Vehicle Shimmy System with Clearance in the Universal Joint Movement

作　　者：张士路[1] 陈渊峰[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,安徽合肥230009

出　　处：《汽车实用技术》2012年第4期46-49,共4页Automobile Applied Technology

摘　　要：在经典三自由度前轮摆振模型的基础上,基于非线性动力学理论,建立了考虑万向节运动副间隙的三自由度摆振模型。利用Poincare截面法绘制了车轮摆角幅值随车速变化的分岔特性曲线,分析了车速变化引起的某非独立悬架汽车前轮自激摆振的Hopf分岔,验证了在特定车速范围内发生自激励摆振的运动特性。Based on nonlinear dynamics, a tree-DOF dynamic model for vehicle shimmy was established, which considered the clearance of universal joint movement. Through Poinca6 mapping method, the Bifurcation characteristic curve of wheel pivot angle amplitude was plotted. Considering the self-excited shimmy which caused by the movement of rigid axle suspension under varied speeds, the Hopf bifurcation was discussed. The results verify the motion characteristic of self-excited shimmy, which under specific rang of speed.

关 键 词：前轮摆振 非线性动力学 间隙 HOPF分岔 

分 类 号：U461.61[机械工程—车辆工程]