Numerical analysis on wheel/rail adhesion under mixed contamination of oil and water with surface roughness

被引：41

作者：

Wu, Bing ^{[1
]}

Wen, Zefeng ^{[1
]}

Wang, Hengyu ^{[1
]}

Jin, Xuesong ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, State Key Lab Tract Power, Chengdu 610031, Sichuan, Peoples R China

来源：

WEAR | 2014年 / 314卷 / 1-2期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

Wheel/rail rolling contact; Adhesion; Mixed contamination; Rough surfaces; CONTACT; SIMULATION; RAIL;

D O I：

10.1016/j.wear.2013.11.041

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A preliminary two dimensional numerical model of wheel/rail in rolling contact is established to study the adhesion characteristics of wheel/rail with considering surface roughness under oil and water mixed contamination. A partial elastohydrodynamic lubrication (EHL) theory in line contact is applied in the model. The present numerical model is used to investigate the effects of contact pressures of wheel/rail, the volume fraction of oil and their locations in the contact zone, train speed on the adhesion coefficient under oil and water mixed contamination condition. In addition, the effects of oil contamination, water contamination and water/oil mixed contamination on the adhesion coefficient are compared. The numerical results show that the adhesion coefficient is greatly influenced by the train speed, the volume fraction of oil and their locations in the contact zone. Furthermore, in order to verify the accuracy of the numerical model, the numerical results are compared with the experimental results that were obtained by JD-1 wheel/rail simulation facility. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：140 / 147

页数：8

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