A quarter-vehicle model and a 3D linear elastic model of asphalt pavement are established. The finite element models of vehicle and road are connected by using contact elements of program ANSYS. The contact non-linear transient solution is conducted. The dynamic characteristics of vehicle-road coupled system are analyzed when a vehicle runs a short distance at a uniform speed. By altering system parameters, the effect of system parameters which involve vehicle velocity, pavement roughness, base module, tire stiffness, tire damping, suspension stiffness and suspension damping on dynamic response of system is calculated and analyzed. Finally, the analysis of system resonance is carried out. It shows that under the structure given in this paper, the maximum of longitudinal tensile stress and maximum of lateral tensile stress both emerge in the joint region of base and sub-base, which can cause fatigue damage. The failure of asphalt concrete is mainly caused by shear stress. The appropriate system parameters are good for improving road life-span and driving comfortableness. The resonance of vehicle-road coupled system should not be ignored.
陈静云;孙依人. 基于接触非线性的车-路耦合系统动力响应分析[J]. , 2013, 32(19): 119-124.
Chen Jingyun;Sun Yiren. Analysis on Dynamic Response of Vehicle-Road Coupled System Based on Non-linear Contact. , 2013, 32(19): 119-124.