Influence of unilateral low adhesion on transient wheel-rail rolling contact and wheel damages

被引：4
|
作者：
Zhao, Xin [1 ]
Huang, Shuangchao [1 ]
Yin, Shan [1 ]
Yang, Jizhong [2 ]
Yang, Zhen [3 ]
Tao, Gongquan [1 ]
Wen, Zefeng [1 ]
机构：
[1] Southwest Jiaotong Univ, State Key Lab Tract Power, Chengdu 610031, Peoples R China
[2] China Railway Eryuan Engn Grp CO LTD, Chengdu, Peoples R China
[3] Delft Univ Technol, Sect Railway Engn, Delft, Netherlands
来源：
WEAR | 2023年 / 530卷
关键词：
High-speed; Wheel-rail rolling contact; Low adhesion; Vibrations; Irregular wear; Explicit FE method;
D O I：
10.1016/j.wear.2023.205053
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A time-domain finite element model is developed to study the transient rolling contact of a driving wheelset over a curved track with Low Adhesion Zones (LAZs) shorter than 1.0 m. LAZs on one rail, i.e., unilateral LAZs occurring more likely, is treated for a speed up to 500 km/h. Structural vibrations of wheelset are analyzed to explain the transient contact forces, creepages and the resulting irregular wear. LAZs on high rails are found more detrimental than those on low rails. The results explain the occurrence of flats and rolling contact fatigue in bad weather, although significant wheel idling is absent.
引用
收藏
页数：15
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