On the influence of microstructural gradients in the fatigue lifetime estimation of a railway axle
1 Univ Lille Nord de France, 59000 Lille, France
2 USTL, LML, 59650 Villeneuve d'Ascq, France
3 EC Lille, LML, 59650 Villeneuve d'Ascq, France
4 CNRS, UMR 8107, 59650 Villeneuve d'Ascq, France
This study aims at characterizing the influence of gradients at different scales (loading, geometry, microstructure...) on fatigue strength through a multi-scale finite element modeling associated to several high cycle fatigue criteria. This is a necessary step in the perspective of conducting a relevant experimental campaign on notched specimen exhibiting a gradient of mechanical properties.
© Owned by the authors, published by EDP Sciences, 2013
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