三向轮胎力作用下路面动力响应分析

摘 要：采用两自由度非线性汽车模型和地基上双层薄板建立三向轮胎力作用下的车-路系统。将非线性Gim模型与垂向点接触轮胎模型相结合对三向轮胎力进行描述。利用伽辽金方法推导三向轮胎力作用下路面响应的解析解，研究制动移线工况下各轮胎分力对路面响应的贡献，比较只考虑垂向轮胎力作用和考虑三向轮胎力作用时路面响应的差别，并分析系统参数对此差别的影响。研究成果有利于揭示车辆对道路的三向作用机理，为道路响应计算和道路寿命预测提供新的研究思路。

Dynamic analysis of pavement under three-directional tire forces

Abstract: The vehicle-road system acted by three-directional tire force is modeled as a 2DOF vehicle moving along a simply supported double-layer rectangular thin plate on a nonlinear visco-elastic foundation. The nonlinear Gim model and vertical point contact model is used to describe tire forces. The pavement response excited by the moving three-directional tire forces is obtained analytically by Galerkin method. The influence of tire forces on pavement response is studied when the vehicle is braking and lane changing. The pavement response under vertical tire force is compared with that under three-directional tire forces. The effect of parameters on this difference is also analyzed. The results found by this work will be benefit to researching the mechanism of three-directional interaction between vehicle and road and proposing a new research scheme of pavement response calculating and lifespan forecast.