摘要
采用一种改进的Bingham模型描述汽车悬架中的磁流变阻尼力,采用平方非线性模型描述轮胎刚度,通过平均法得到了两自由度汽车悬架系统振动的一次近似解和幅频响应曲线,并进行了数值验证。研究了系统参数对动态轮胎力的影响,结果表明,增加改进的Bingham模型中的参数C1、Fy、V0都会减小动态轮胎力,但是C1、Fy的影响较大,而V0的影响较小;平方非线性轮胎刚度系数对动态轮胎力的影响非常小。研究结果可为减小汽车振动、防止道路破坏提供理论参考。
A revised Bingham model for MRF damping is used to describe the nonlinear damping force of vehicle suspension. The nonlinear stiffness of tire is in a form of squared relations. An analytical solution for the two DOF vehicle system＇s dynamical response is obtained by averaging method, which is verified by the numerical solution. In addition, the effect of system parameters on the dynamical tire force is also studied. It is found that with the increase of C1, Fy and V0 in the revised Bingham model, the tire force decreases and the effect of C1 and Fy on the tire force is greater than that of V0 ; the effect of square nonlinearity of the tire stiffness on the tire force is small. The results of this study may be relevant to the vehicle vibration control and the avoidance of road damage.
出处
《科技导报》
CAS
CSCD
北大核心
2009年第2期33-37,共5页
Science & Technology Review
基金
国家杰出青年科学基金项目(50625518)
国家自然科学基金项目(10672107)
河北省自然科学基金项目(E2007000657)
关键词
汽车悬架
非线性
改进Bingham模型
平均法
轮胎动载
vehicle suspension
nonlinearity
revised Bingham model
averaging method
dynamical tire force
