Material defects in rolling contact fatigue of railway wheels - the influence of defect size

被引：31
|
作者：
Kabo, E [1 ]
Ekberg, A
机构：
[1] Chalmers Univ Technol, Dept Appl Mech, CHARMEC, SE-41296 Gothenburg, Sweden
[2] Caran, SE-41655 Gothenburg, Sweden
来源：
WEAR | 2005年 / 258卷 / 7-8期
关键词：
material defects; multiaxial fatigue; rolling contact fatigue; railway wheels;
D O I：
10.1016/j.wear.2004.03.070
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The influence of the size of material defects on rolling contact fatigue of railway wheels is investigated. To study differences between uniaxial tensile loading and rolling contact loading, finite element simulations of a defected component are carried out. The results show that stress and strain fields (as quantified by the Jiang-Sehitouglu multiaxial fatigue criterion) in the vicinity of a defect differ between these two cases. It is concluded that semi-empirical methods derived for uniaxial loading are doubtful for rolling contact applications. Instead, an elasto-plastic finite element based model is designed and employed to compare fatigue impact of defects of different sizes subjected to rolling contact loading. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：1194 / 1200
页数：7
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