Fatigue crack propagation in rocker and roller-rocker bearings of railway steel bridges

被引：5

作者：

Deshpande, Aditya S. ^{[1
]}

Kishen, J. M. Chandra ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Civil Engn, Bangalore 560012, Karnataka, India

来源：

ENGINEERING FRACTURE MECHANICS | 2010年 / 77卷 / 09期

关键词：

Bearings; Rolling; Contact; Fatigue; Crack propagation; FINITE-ELEMENT-METHOD; MINIMUM PRINCIPLE; DRY FRICTION; LAW;

D O I：

10.1016/j.engfracmech.2010.04.003

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this work, a method is proposed for rolling contact fatigue crack propagation analysis using contact and fracture theories in conjunction with fatigue laws. The proposed method is used in the fatigue analysis of rocker and roller-rocker bearings of a railway open web girder bridge which is instrumented with strain gages. Using a contact algorithm based on the minimum energy principle for bodies in rolling contact with dry friction, the normal and tangential pressure distribution are computed. It is seen that the most critical location of a crack in bearings is at a point very close to the contact region, as expected. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1454 / 1466

页数：13

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