Evaluation of slant crack propagation under RCF in railway rail

被引：4

作者：

Xu, Xiangyuan ^{[1
]}

Cho, Doo-Ho ^{[1
]}

Chang, Yoon-Suk ^{[2
]}

Choi, Jae-Boong ^{[1
]}

Kim, Young-Jin ^{[1
]}

Jun, Hyun-Kyu ^{[3
]}

Seo, Jung-Won ^{[3
]}

Kim, Dae-Sang ^{[3
]}

机构：

[1] Sungkyunkwan Univ, Sch Mech Engn, Suwon 440746, Kyonggi Do, South Korea

[2] Kyung Hee Univ, Dept Nucl Engn, Yongin 446701, Kyonggi Do, South Korea

[3] Korea Railroad Res Inst, Uiwang Si 437757, Kyonggi Do, South Korea

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2011年 / 25卷 / 05期

关键词：

Effective stress intensity factor range; FE method; Hertzian contact; Rolling contact fatigue; Slant crack; GROWTH;

D O I：

10.1007/s12206-011-0312-4

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Crack propagation due to rolling contact fatigue (RCF) could be a significant potential challenge to the integrity of railway rails because it may lead to a serious disaster. Fatigue cracks subjected to cyclic rolling contact force experience a complex non-proportional mixed loading and complicated boundary condition. In the present research, complex crack opening/closure/sliding/locked behaviors as the cyclic contact loading movement is analyzed considering liquid lubrication action on rail surfaces as well as crack faces. Based on a series of FE analyses, the calculations of the effective SIF ranges for RCF cracks under certain contact loading and boundary conditions are proposed in the form of polynomial functions which will be appropriately used to predict RCF crack growth rate.

引用

下载

页码：1215 / 1220

页数：6

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