环境条件对轮轨黏着特性影响的试验研究  

Study on effect of environment factors on wheel/rail adhesion characteristic

作　　者：申鹏[1] 宋建华[1] 王海洋[1] 刘启跃[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：《铁道学报》2011年第5期26-30,共5页Journal of the China Railway Society

基　　金：国家自然科学基金资助项目(50905148);国家重点实验室自主研究课题(2008TPL_Z09);国家重点基础研究发展计划(973计划)项目(2007CB714700)

摘　　要：摘要：利用JD-1轮轨模拟试验机研究新与旧模拟轮、新与生锈模拟轮和冲角等参数对轮轨黏着系数的影响。结果表明：干态和有水工况下，随着冲角的增加，轮轨纵向黏着系数均有所下降，而横向黏着系数均呈现上升趋势。对比干态和有水工况，发现有水下工况纵向黏着系数下降较多，下降了50％～60％，但横向黏着系数下降不明显。新模拟轮与模拟轨转动产生的黏着系数要小于旧的模拟轮与模拟轨转动产生的黏着系数；新模拟轮与模拟轨转动产生的黏着系数与生锈的模拟轮与模拟轨转动产生的黏着系数相差无几。The effect of new and old simulating wheels, unrusted and rusted simulating wheels and the incidence angle on the wheel/rail adhesive coefficient is studied with JD-1 wheel/rail simulating facilities. The results indicate that under both wet and dry conditions the longitudinal adhesive coefficient decreases by 50%-60% with the increase of the incidence angle, while the lateral adhesive coefficient increases. By comparison of the dry condition to the wet condition, it is found that under the wet condition the longitudinal adhesive coefficient decreases a lot, but the lateral adhesive coefficient decreases slightly. The adhesive coefficient obtained on a new simulating wheel is smaller than that obtained on an old simulating wheel. Meanwhile, there is a little difference between the adhesive coefficient obtained on a new simulating wheel and that obtained on a rusted simulating wheel.

关 键 词：模拟轮 生锈 冲角 黏着系数 

分 类 号：U211.5[交通运输工程—道路与铁道工程]