四轮车辆振动模拟与非线性因素的影响分析

Four-wheel vehicle vibration analog and analysis of influence by nonlinear factors

基于8自由度的非线性车辆动理学模型，以四轮相关滤波白噪声路面为系统输入，对四轮车辆的随机振动过程进行了计算机时域模拟和实验验证，进而分析了在不同车速条件下钢板弹簧和减震器的非线性因素对车辆平顺性的影响，深入揭示了车辆非线性振动过程的本质。

Based on the nonlinear vehicle dynamic model with 8 degrees of freedom, and inputting with four-wheel filtering noise road surface as a system, this paper conducts computer time simulation and experimental verification for random vibration process of a four-wheel vehicle, analyzes the influence over vehicle smoothness by nonlinear factors of leaf springs and shock absorbers at various riding speed, and discloses the nature of vehicle＇s nonlinear vibration process.