The competitive role of wear and RCF in a rail steel

被引：131

作者：

Donzella, G

Faccoli, M

Ghidini, A

Mazzù, A

Roberti, R

机构：

[1] Univ Brescia, Dipartimento Ingn Meccan, I-25123 Brescia, Italy

[2] Lucchini Sidermeccan, I-25063 Lovere, Italy

来源：

ENGINEERING FRACTURE MECHANICS | 2005年 / 72卷 / 02期

关键词：

rolling contact fatigue; wear; rails; cracks; elastic shakedown;

D O I：

10.1016/j.engfracmech.2004.04.011

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A model for assessing wear and rolling contact fatigue (RCF) in rails is proposed, with particular emphasis for their competitive role. RCF was studied taking into account different mechanisms of crack nucleation and propagation in different working conditions, and failure indexes are proposed to predict which damage mechanism prevails. Wear was investigated in terms of wear rate under different working conditions; a method to compare it to crack propagation rate is proposed in order to predict if wear can remove surface cracks due to RCF. The effectiveness of the method was verified by experimental tests. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：287 / 308

页数：22

共 31 条

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[Anonymous], ASME J BASIC ENG

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