水介质下轮轨制动黏着试验研究  

Experimental Study on Wheel-rail Brake Adhesion Under Water Condition

作　　者：吴萌岭 周嘉俊 马天和 刘寅虎 WU Mengling;ZHOU Jiajun;MA Tianhe;LIU Yinhu(Institute of Rail Transit,Tongji University,ShangHai 201804,China;Nanjing Puzhen Haitai Brake Equipments Co.,Ltd.,NanJing 211800 Jiangsu,China)

机构地区：[1]同济大学铁道与城市轨道交通研究院,上海201804 [2]南京浦镇海泰制动设备有限公司,南京211800

出　　处：《铁道机车车辆》2021年第5期139-143,共5页Railway Locomotive & Car

基　　金：国家自然科学基金(U1534205)。

摘　　要：长期以来,人们对轮轨黏着特性的普遍认知是,在一定量的水介质工况下,黏着系数—滑移率曲线为一条先上升到某一饱和值后再下降的曲线。文中通过试验研究,发现了一种不同于传统认知的现象:在水介质工况下对轮对施加制动,切向力与正压力的比值随着滑移率的增大,先是增大到某一饱和值后有所下降,但随着滑移率进一步的增大,该比值出现上升的趋势。For a long time,general perception of adhesion is that under a certain water lubrication condition,the adhesion coefficientslip rate curve is a curve that first rises to a saturation value and then falls.Through experimental research,a phenomenon different from traditional cognition is found in this paper:when the brake is applied to the wheel pair in water medium,the ratio of tangential force to positive pressure increases first with the increase of slip rate.And then it decreases after reaching a certain saturation value,but as the slip ratio further increases,the ratio increases.

关 键 词：载运工具运用工程 黏着系数 滑移率 水介质 

分 类 号：U270.35[机械工程—车辆工程]