Crystallographic fatigue crack growth in a polycrystal: simulations based on FEM and discrete dislocation dynamics - Département de mécanique Accéder directement au contenu
Communication Dans Un Congrès Année : 2003

Crystallographic fatigue crack growth in a polycrystal: simulations based on FEM and discrete dislocation dynamics

Résumé

An attempt to model the variability of short cracks development in high-cycle fatigue is made by coupling finite element calculations of the stresses ahead of a microcrack in a polycrystal with simulations of crack growth along slip planes based on discrete dislocations dynamics. The model predicts a large scatter in growth rates related to the roughness of the crack path. It also describes the influence of the mean grain size and the fact that overloads may suppress the endurance limit by allowing arrested cracks to cross the grain boundaries.
Fichier principal
Vignette du fichier
Bertolino2003.pdf (437.82 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00117691 , version 1 (24-06-2024)

Identifiants

  • HAL Id : hal-00117691 , version 1

Citer

Graciela Bertolino, Véronique Doquet, Maxime Sauzay. Crystallographic fatigue crack growth in a polycrystal: simulations based on FEM and discrete dislocation dynamics. 9th International Conference on the Mechanical Behaviour of Materials, 2003, Genève, Switzerland. ⟨hal-00117691⟩
88 Consultations
0 Téléchargements

Partager

Gmail Mastodon Facebook X LinkedIn More