摘要
对某地铁线路轮轨磨耗进行现场测试,掌握了该线路轮轨磨耗特征。利用动力学软件UM建立地铁车辆-轨道动力学模型,采用Hertz接触理论和FASTSIM算法分别计算轮轨法向力和切向力,结合Archard磨耗模型对小半径曲线外轨轨侧润滑的减磨效果进行预测,提出小半径曲线钢轨磨耗控制措施。钢轨磨耗测试结果表明,由于该线路小半径曲线外轨缺乏有效润滑,导致外轨以侧面磨耗为主,曲线半径越小侧磨越严重。仿真结果表明,小半径曲线采用外轨轨侧润滑的方式能显著降低钢轨侧面磨耗量;在半径为350 m的曲线外轨侧施加润滑可使外轨磨耗降低9%~34%;当半径为650 m时,外轨侧面润滑的减磨效果已不明显。根据仿真结果,建议半径600 m以下的曲线对外轨轨侧进行适当润滑,可有效缓解钢轨磨耗。
The wheel/rail wear characteristic of a metro line was obtained by field measurement.The metro vehicle-track dynamics model was built by the multi-body dynamics software UM.The normal and tangential wheel/rail contact forces were solved by the Hertzian theory and Kalker’s simplified theory,respectively.The Archard wear model was adopted to investigate the effect of rail lubrication on rail side wear.The control measures of rail wear with sharp curves were put forward.The results of field investigation indicate that the side wear is the main form on sharp curves due to the lack of effective lubrication on outer rail side.The rail side wear is more serious on the tight curves.Simulation results show that the outer rail side wear can be mitigated effectively by lubricating.The wear area of outer rail can be reduced by 9%~34% by applying lubrication on the outer rail side of curve with radius of 350 m.The wear reduction effect is obviously decreased when lubricating on curves with radius larger than 600 m.According to the simulation results,it is suggested to lubricate the outer rail side for curves with radius less than 600 m.
作者
谢晨希
陶功权
陆文教
温泽峰
金学松
XIE Chenxi;TAO Gongquan;LU Wenjiao;WEN Zefeng;JIN Xuesong(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu Sichuan 610031,China;Guangzhou Metro Group Co.,Ltd.,Guangzhou Guangdong 510330,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2019年第6期60-65,共6页
Lubrication Engineering
基金
国家自然科学基金项目(51605395)
