三向轮胎力作用下路面动力响应分析  

Dynamic analysis of pavement under three-directional tire forces

作　　者：李韶华[1] 杨绍普[1] 李皓玉[1] 

机构地区：[1]石家庄铁道大学机械工程学院,石家庄050043

出　　处：《振动与冲击》2012年第13期31-35,共5页Journal of Vibration and Shock

基　　金：国家自然基金资助项目(11072159);河北省自然科学基金项目(E2010001095);教育部长江学者和创新团队发展计划资助项目(IRT0971)

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。The vehicle-road system acted by three-directional tire forces was 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 were used to describe tire forces. The pavement response excited by the moving three-directional tire forces was obtained analytically by using Galerkin method. The influence of tire forces on pavement response was studied under the vehicle＇s braking and lane changing. The pavement response under vertical tire force was compared with that under three-directional tire forces. The effect of parameters on this difference was also analyzed. The results will be benefit to researching the mechanism of three-directional interaction between vehicle and road and proposing a new research scheme of pavement response calculation and lifespan forecast.

关 键 词：三向轮胎力 车-路系统 路面响应 Gim轮胎模型 伽辽金方法 

分 类 号：U461.2[机械工程—车辆工程] U416.01[交通运输工程—载运工具运用工程]