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RESEARCH PAPERS

A Finite Element Analysis of Crack Initiation and Propagation in a Notched Disk Submitted to Rolling Contact Fatigue

[+] Author and Article Information
V. Bordi, B. Villechaise

Université de Poitiers, Laboratoire de Mécanique des Solides, SP2MI, Bd 3 Téléport 2, BP179, 86960 Futuroscope, Cedex, France

Ch. Dorier

Direction des Etudes et Recherches d’EDF, Service EP-Département Machines, 6, Quai Watier, 78401 Chatou Cedex, France

J. Tribol 120(3), 436-441 (Jul 01, 1998) (6 pages) doi:10.1115/1.2834568 History: Received January 31, 1996; Revised June 06, 1997; Online January 30, 2008

Abstract

A finite element model has been developed to predict crack initiation and propagation in a notched disk submitted to rolling contact fatigue. The aim of this study is to validate the model with experimental results obtained by tests carried out on a two-disk machine. First, a three-dimensional finite element analysis is performed. A unidimensional equivalent damage stress is calculated by applying a plastic criterion in an attempt to estimate the damage location and the time necessary to initiate cracks from the notches. Then a two-dimensional calculation based on linear fracture mechanics is conducted to determine mixed mode stress intensity factors at the tip of a crack initiated from the notch. Several crack growth criteria are used to evaluate crack growth direction and rate. Numerical results are in good agreement with experimental ones.

Copyright © 1998 by The American Society of Mechanical Engineers
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