Fatigue damage mechanism of railway wheels under lateral forces

被引：15
|
作者：
Zhou, Guiyuan [1 ]
He, Chenggang [1 ]
Wen, Guang [1 ]
Liu, Qiyue [1 ]
机构：
[1] Southwest Jiaotong Univ, Tribol Res Inst, State Key Lab Tract Power, Chengdu 610031, Sichuan, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2015年 / 91卷
基金：
中国国家自然科学基金;
关键词：
RCF; Lateral force; Plastic deformation; Fatigue cracks; ROLLING-CONTACT FATIGUE; WEAR; MODEL; PREDICTION; WHEEL/RAIL; TRACTION; FRICTION; SLIP; RCF;
D O I：
10.1016/j.triboint.2015.07.008
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Under conditions of curve.negotiating and hunting, lateral force is generated at the wheel/rail interface that can damage the wheel tread. The rolling contact tests were performed on a JD-1 wheel/rail simulation apparatus with different lateral forces between the rail and wheel rollers. The results indicate that plastic deformation and mild wear dominated at each side of the contact area, while fatigue damage dominated at the middle region. Drastic changes in stress and stress direction from the high stress region to the lower stress region can lead to plastic accumulation and the initiation of fatigue cracks. The formation and breaking of metal tongue make big contribution to material loss in this condition. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：160 / 169
页数：10
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