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            <title xml:lang="en">Rolling Contact Fatigue of Railway Wheel without defect</title>
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                <title xml:lang="en">Rolling Contact Fatigue of Railway Wheel without defect</title>
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                    <surname>Nemeyuko</surname>
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                <term xml:lang="en">wheel-rail contact</term>
                <term xml:lang="en">elastoplastic model</term>
                <term xml:lang="en">isotropic strain hardening</term>
                <term xml:lang="en">nonlinear kinematic strain hardening</term>
                <term xml:lang="en">critical plane</term>
                <term xml:lang="en">fatigue damage</term>
                <term xml:lang="en">fatigue life</term>
                <term xml:lang="en">wheel-rail contact elastoplastic model isotropic strain hardening nonlinear kinematic strain hardening critical plane fatigue damage fatigue life</term>
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              <p>&lt;div&gt;&lt;p&gt;Rolling Contact Fatigue (RCF) is a highly localized damage phenomenon that can occur in railway wheels subjected to multiaxial, non-proportional cyclic loads. In such scenarios, cracks are initiated either at the surface or beneath it. Repeated cyclic tangential forces primarily cause surfaceinitiated cracks during wheel-rail interactions, which lead to cumulative plastic deformation of the surface material. This contact can be either between the wheel flange and the rail flange for low values of the coefficient of friction during the traction phases, or between the wheel tread and the rail head for high values of the coefficient of friction during the braking phases. The high energy efficiency of rail transportation is made possible by the favorably low losses in the rolling contact between the hard surfaces of wheel and rail, which meet only in a very small contact zone of relatively elliptical shape. In this article, a two-dimensional cross-section of a defect-free railway wheel was modeled using Abaqus computational software. The elastoplastic material model proposed by Lemaitre and Chaboche with a behavior law combining isotropic strain hardening and nonlinear kinematic strain hardening was adopted. Random changes in stress and strain state lead to multiaxial fatigue behavior. The wheel damage is thus obtained by calculating the value of the fatigue parameter, F P , in different planes of the material using the Jiang-Sehitoglu multiaxial fatigue approach. The model for predicting fatigue life at crack initiation in the wheel is based on a combination of the Smith-Watson-Topper relationship and the Jiang-Sehitoglu fatigue parameter. The maximum fatigue parameter corresponds to the critical plane at which fatigue cracks initiate. Wheel-rail contact, elastoplastic model, isotropic strain hardening and nonlinear kinematic strain hardening, critical plane, elastic shakedown, plastic shakedown, ratcheting phenomenon, fatigue damage, and fatigue life.&lt;/p&gt;&lt;/div&gt;</p>
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