Strain localization analysis in materials containing randomly distributed voids: Competition between extension and shear failure modes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of the Mechanics and Physics of Solids Année : 2022

Strain localization analysis in materials containing randomly distributed voids: Competition between extension and shear failure modes

(1, 2) , (2) , (1) , (2) , (2) , (2) , (1)
1
2
Clément Cadet
Jacques Besson
Samuel Forest
Laurent Lacourt
Victor de Rancourt
  • Fonction : Auteur
  • PersonId : 776371
  • IdRef : 19058839X

Résumé

In ductile fracture, strain localization can often be a precursor to the failure of the material. The paper proposes to investigate this phenomenon in the case of random microstructures. Such microstructures are cubic cells made of an elastic-perfectly plastic matrix embedding distribution of identical spherical voids. They allow a better representation of the interaction between voids and greater diversity of failure modes than single-void (or unit) cells. The cells are simulated by finite element for proportional stress loading paths. Strain localization is detected with Rice's criterion computed at the level of the cell. This criterion is shown to accurately detect the onset of localization and the type of failure mode: in extension or in shear. Moreover, the influence of the loading orientation (that is, the orientation of the principal frame of the applied stress with respect to the microstructure) is systematically studied. A strong anisotropy of failure behavior is observed, which can be attributed to the intrinsic anisotropy of the simulation cells. Finally minimal failure strain values on all loading orientations are found. A zone of reduced ductility is observed in generalized shear.
Fichier principal
Vignette du fichier
riceAnisotropy_preprint.pdf (11.56 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03629342 , version 1 (04-04-2022)

Identifiants

  • HAL Id : hal-03629342 , version 1

Citer

Clément Cadet, Jacques Besson, Sylvain Flouriot, Samuel Forest, Pierre Kerfriden, et al.. Strain localization analysis in materials containing randomly distributed voids: Competition between extension and shear failure modes. Journal of the Mechanics and Physics of Solids, 2022, 166, pp.104933. ⟨hal-03629342⟩
67 Consultations
61 Téléchargements

Partager

Gmail Facebook Twitter LinkedIn More