Communication Dans Un Congrès Année : 2015

Numerical predictions of ductile fracture limits in deep drawing processes

Résumé

In this work, two numerical ductile fracture criteria based on finite element (FE) simulations are proposed for the prediction of ductile fracture limits (DFLs) for sheet metals. An elastic–plastic model coupled with the Lemaitre continuum damage theory has been implemented into the ABAQUS/Explicit software to simulate simple sheet stretching tests as well as the Nakazima deep drawing tests with various sheet specimen geometries. The first numerical criterion is based on the analysis of the thickness strain concentration and damage evolution in the central part of the specimens in order to determine the occurrence of ductile fracture. The second numerical criterion relies on a damage threshold at which is associated the occurrence of ductile fracture. The DFLs thus predicted by numerical simulations of simple sheet stretching with various specimen geometries and Nakazima deep drawing tests are compared with the experimental results.

Fichier principal
Vignette du fichier
LEM3_M2D_2015_Chalal-Abed-Meraim.pdf (537.11 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-05110128 , version 1 (12-06-2025)

Licence

Identifiants

  • HAL Id : hal-05110128 , version 1

Citer

Hocine Chalal, Farid Abed-Meraim. Numerical predictions of ductile fracture limits in deep drawing processes. 6th International Conference on Mechanics and Materials in Design (M2D’15), Jul 2015, Ponta Delgada, Portugal. ⟨hal-05110128⟩
32 Consultations
62 Téléchargements

Partager

  • More