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

Deshpande, Aditya S and Kishen, Chandra JM (2010) Fatigue crack propagation in rocker and roller–rocker bearings of railway steel bridges. In: Engineering Fracture Mechanics, 77 (9). pp. 1454-1466.

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Abstract

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.

Item Type:	Journal Article
Publication:	Engineering Fracture Mechanics
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs Elsevier Science.
Keywords:	Bearings Rolling Contact Fatigue Crack propagation.
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	12 Jul 2010 07:20
Last Modified:	19 Sep 2010 06:11
URI:	http://eprints.iisc.ac.in/id/eprint/29202

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