Numerical Analysis of Rolling Contact Fatigue Crack Initiation and Fatigue Life Prediction of the Railway Crossing
L. Xin
V.L. Markine
I. Shevtsov
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Abstract
The procedure for analysing rolling contact fatigue crack initiation and fatigue life prediction of the railway turnout crossing is developed. A three-dimensional finite element (FE) model is used to obtain stress and strain results, considering the dynamic effects of wheel-crossing rolling contact. Material model accounting for elastic- plastic isotropic and kinematic hardening effects is adopted. The results from FE analysis are combined with J-S fatigue model that is based on critical plane approach, and fatigue crack initiation life is predicted according to different positions on the crossing. The most critical position on the crossing is found and number of cycles to crack initiation is predicted.