轮轨粘着面积的数值研究  

Numerical study on adhesion area of wheel-rail

作　　者：刘海萍[1] 王彩芸[1] 申鹏[1] 刘启跃[1] 周仲荣[1] 

机构地区：[1]西南交通大学摩擦学研究所,四川成都610031

出　　处：《机械设计》2011年第6期9-11,14,共4页Journal of Machine Design

基　　金：国家自然科学基金资助项目(50905148;50875221);国家重点基础研究发展计划(973计划)资助项目(2007CB714702);国家863计划资助项目(2009AA04Z424);高速轮轨粘着机理与控制研究资助项目(50905148)

摘　　要：利用非Hertz滚动接触理论,应用数值方法CONTACT,分别计算了我国列车常用的两种车轮踏面(磨耗型和锥形)在列车静态接触情况下曲线半径、横移量和轮对摇头角对接触斑总面积和粘/滑区占接触斑总面积比重的影响。经过计算分析表明:在各种工况下,锥形踏面的接触斑总面积都大于相应磨耗型的,随着钢轨曲线半径的增大,接触斑面积无变化,粘着系数增大,接触斑中粘着区所占面积比重减小;当横移量增大到10 mm时,接触斑面积骤减,粘着占总面积比重亦骤减,进入全滑动区,出现爬轨;随着轮对摇头角的变化,接触斑面积几乎无变化,当轮对摇头角大于0.4°时,接触斑处于全滑动状态,粘着占总面积比重骤减。By applying the Non-Hertz rolling contact theory and the numerical method CONTACT,the influence on the proportion of total contact spot area to the adhesion/slide area by the curve radius,traverse amount and wheel to yaw angle of two kinds of commonly used train wheel tread（worn profile and taper） in our country under the condition that the train is in static contact has been calculated respectively.The calculation and analysis results indicate that the total contact spot area of taper tread is bigger than that of the worn profile under any conditions.The contact spot area will not change while the curve radius of the rails increases,but the adhesion coefficient will increases,and the proportion of the adhesion area in the contact spot area decreases.When the traverse amount increases up to 10 mm,the contact spot area reduces very rapidly and the adhesion area in the total contact spot area also decreases very rapidly.When entering the full slide area,the rail climbing occurs.The contact spot area hardly changes while the wheel to yaw angle is changing.When the wheel to yaw angle is bigger than 0.4°,the contact spot is in full slide state,and the proportion of adhesion to total area decreases rapidly.

关 键 词：轮轨粘着 曲线半径 横移量 摇头角 

分 类 号：U211.5[交通运输工程—道路与铁道工程]