Probabilistic prediction model for initiation of RCF cracks in heavy-haul railway

被引：34

作者：

Wang Jianxi ^{[1
]}

Xu Yude ^{[2
]}

Lian Songliang ^{[2
]}

Wang Liying ^{[3
]}

机构：

[1] Shijiazhuang Tiedao Univ, Sch Civil Engn, Shijiazhuang 050043, Peoples R China

[2] Tongji Univ, Minist Educ, Key Lab Rd & Traff Engn, Shanghai 201804, Peoples R China

[3] Hebei Univ Engn, Coll Water Elect Power, Handan 056021, Peoples R China

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2011年 / 33卷 / 02期

关键词：

Rolling contact fatigue; Life prediction; Railway rails; Random loading; Probability; FATIGUE PROPERTIES; MICROSTRUCTURE;

D O I：

10.1016/j.ijfatigue.2010.08.006

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A comprehensive approach was developed for studying the probability of fatigue crack initiation under random wheel/rail force and random material properties. Firstly, a load spectrum was established based on the distribution of wheel/rail forces. Secondly, the discreteness of rail fatigue properties was analyzed by using Monte Carlo simulation and parametric assumed test method. Then three-dimensional finite element models were created to predict rail surface and subsurface stresses under different amplitudes of wheel/rail forces. Based on the critical plane concept, a new probabilistic prediction model was proposed to account for the effects of random wheel/rail forces on the rolling contact fatigue (RCF) crack initiation life. The results show that the prediction result from the model is in good consistence with the observations in field. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.

引用

页码：212 / 216

页数：5

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