频繁启停工况下轮轨滚动接触磨损行为与磨屑颗粒排放特性研究

doi:10.3901/JME.2022.03.194

机械工程学报 ›› 2022, Vol. 58 ›› Issue (3): 194-202.doi: 10.3901/JME.2022.03.194

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频繁启停工况下轮轨滚动接触磨损行为与磨屑颗粒排放特性研究

沈明学^1,2,3, 容彬¹, 秦涛¹, 肖叶龙^1,3, 熊光耀^1,3, 朱旻昊²

1. 华东交通大学材料科学与工程学院南昌 330013;
2. 西南交通大学牵引动力国家重点实验室成都 610031;
3. 华东交通大学轨道交通基础设施性能监测与保障国家重点实验室南昌 330013

收稿日期:2021-03-01 修回日期:2021-09-18 出版日期:2022-02-05 发布日期:2022-03-19
通讯作者: 朱旻昊(通信作者),男,1968年出生,博士,教授,博士研究生导师。主要研究方向为微动摩擦学、轮轨关系及表面工程防护。E-mail:zhuminhao@swjtu.cn
作者简介:沈明学,男,1982年出生,博士,教授,博士研究生导师。主要研究方向为铁路摩擦学与表面工程防护。E-mail:shenmingxue@126.com
基金资助:
国家自然科学基金（52061012，51775503）、江西省杰出青年基金（20212ACB214003）和牵引动力国家重点实验室开放课题（TPL1906）资助项目。

Study on Wear Behavior and Debris Particles Emission Characteristics Induced by Wheel-rail Rolling Contact under Frequent Start-stop Conditions

SHEN Mingxue^1,2,3, RONG Bin¹, QIN Tao¹, XIAO Yelong^1,3, XIONG Guangyao^1,3, ZHU Minhao²

1. School of Material Science and Engineering, East China Jiaotong University, Nanchang 330013;
2. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031;
3. State Key Laboratory of Performance Monitoring and Guarantee of Rail Transport Infrastructure, East China Jiaotong University, Nanchang 330013

Received:2021-03-01 Revised:2021-09-18 Online:2022-02-05 Published:2022-03-19

摘要/Abstract

摘要： 轨道交通车辆在近站点附近须频繁启停，在加减速过程中轮轨界面接触应力分布变得更为复杂，从而引起轮轨磨耗和磨屑行为的改变。为深入了解近站点附近频繁启停工况下轮轨滚动接触界面的磨损特性与颗粒物排放行为，利用自行研制的JD-DRCF/M型轮轨滚动接触疲劳/磨损试验台开展了频繁启停工况下轮轨循环加减速磨损试验与颗粒物排放实时监测。结果表明，轮轨间黏着系数受加速度α_r的影响显著；随着加速度α_r的提高，加速阶段完成后的黏着系数依次呈现先下降后上升的趋势；适中的加速度（如α_r=800 r·min^-2）降低了轮轨间黏着，同时有效减缓了轮轨磨耗；启停工况（即有加速度时）大大提高了可吸入颗粒物（如3.0 ≤ d ≤ 10.0 μm）的排放浓度，尤其在较低的加速度（如400 r·min^-2）工况下这种现象更为严重。

关键词: 轮轨磨损, 频繁启停, 滚动接触, 加减速, 颗粒物排放

Abstract: Rail transit vehicles are subject to frequent stops and starts near stations, the contact stress distribution between the wheel-rail interfaces become more complex during the process of acceleration and deceleration, which leads to unusual wheel-rail wear and debris behavior. An innovative wheel-rail rolling contact fatigue and wear test rig JD-DRCF/M is developed to carry out the cyclic acceleration and deceleration wear test for the wheel-rail rolling contact tribo-pairs and real-time monitoring of particle emission under frequent start-stop conditions, to understand the wear behavior and particle emission characteristics of the wheel-rail rolling contact interface near the station. The results showed that, the adhesion coefficient between wheel and rail is significantly affected by the acceleration α_r. With the increase of the acceleration α_r, the adhesion coefficient after the completion of the acceleration stage showed a trend of gradually decreased and then gradually rose. Moderate acceleration (e.g., α_r=800 r·min^-2) reduces the adhesion between wheel and rail interface, and mitigates the wear loss of wheel and rail effectively. The emission of inhalable particles (e.g., 3.0 μm ≤ d ≤ 10.0 μm) is significantly increased under the start-stop condition (i.e., the condition of acceleration). In especial, this phenomenon was more serious under the low acceleration condition (e.g., α_r=400 r·min^-2).

Key words: wheel and rail wear, frequent start-stop, rolling contact, accelerate and decelerate, particles emission

中图分类号:

U211

沈明学, 容彬, 秦涛, 肖叶龙, 熊光耀, 朱旻昊. 频繁启停工况下轮轨滚动接触磨损行为与磨屑颗粒排放特性研究[J]. 机械工程学报, 2022, 58(3): 194-202.

SHEN Mingxue, RONG Bin, QIN Tao, XIAO Yelong, XIONG Guangyao, ZHU Minhao. Study on Wear Behavior and Debris Particles Emission Characteristics Induced by Wheel-rail Rolling Contact under Frequent Start-stop Conditions[J]. Journal of Mechanical Engineering, 2022, 58(3): 194-202.

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频繁启停工况下轮轨滚动接触磨损行为与磨屑颗粒排放特性研究

Study on Wear Behavior and Debris Particles Emission Characteristics Induced by Wheel-rail Rolling Contact under Frequent Start-stop Conditions

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