Numerical investigation of fatigue strength of grain size gradient materials under heterogeneous stress states in a notched specimen - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Fatigue Année : 2016

Numerical investigation of fatigue strength of grain size gradient materials under heterogeneous stress states in a notched specimen

Pierre Baudoin
  • Fonction : Auteur
  • PersonId : 1021829
François Demilly
  • Fonction : Auteur
  • PersonId : 939320

Résumé

A possible consequence of forging in common steels is the apparition of a grain size gradient in the width of the component. For railway axles in service, this microstructure gradient is superimposed to the stress gradient introduced by the external load of rotatory bending imposed on the axle. To investigate the combined effects of these gradients on the fatigue lifetime of a forged railway axle, a numerical investigation of the effects of microstructure gradients inserted in a notched specimen is proposed, with respect to different fatigue indicators. In particular, the predictions of an approach based on the theory of critical distances seem to be very promising in this case.
Fichier principal
Vignette du fichier
baudoin2016.pdf (2.35 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01279003 , version 1 (15-07-2021)

Licence

Paternité

Identifiants

Citer

Pierre Baudoin, Vincent Magnier, Ahmed El Bartali, Jean-François Witz, Philippe Dufrenoy, et al.. Numerical investigation of fatigue strength of grain size gradient materials under heterogeneous stress states in a notched specimen. International Journal of Fatigue, 2016, 87, pp.132-142. ⟨10.1016/j.ijfatigue.2016.01.022⟩. ⟨hal-01279003⟩
192 Consultations
36 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More