某两轴重型载货汽车车轮动态荷载的研究分析

Research and Analysis on Dynamic Load of Wheel of a Two-axis Heavy Cargo Vehicle

文章采用滤波白噪声法生成路面不平度时域模型,建立了车辆动力学模型,并用Simulink软件进行动力学仿真,分析了不同类型的的路面、车速、轴重、悬架阻尼和刚度等因素对车轮动载荷以及载荷系数的影响,根据所得结论提出了最优解决方案。结果表明:降低车速、汽车轴重、悬架刚度、增加悬架阻尼都可以减小车轮的动载荷,进而减小振动、提高行驶的平顺性。

A time-domain model of road roughness is generated by filtering white noise method,and a vehicle dynamic model is established.Simulink is used to carry out dynamic simulation.The effects of different types of road surface,vehicle speed,axle load,suspension damping and stiffness on wheel dynamic load and load coefficient are analyzed.The best solution is put forward.The results show that reducing vehicle speed,axle load,suspension stiffness and increasing suspension damping can reduce the dynamic load of the wheel,thereby reducing vibration and improving ride comfort.