Communication Dans Un Congrès Année : 2016

Ductility prediction of substrate-supported metal layers based on rate-independent crystal plasticity theory

Résumé

In this paper, both the bifurcation theory and the initial imperfection approach are used to predict localized necking in substrate-supported metal layers. The self-consistent scale-transition scheme is used to derive the mechanical behavior of a representative volume element of the metal layer from the behavior of its microscopic constituents (the single crystals). The mechanical behavior of the elastomer substrate follows the neo-Hookean hyperelastic model. The adherence between the two layers is assumed to be perfect. Through numerical results, it is shown that the limit strains predicted by the initial imperfection approach tend towards the bifurcation predictions when the size of the geometric imperfection in the metal layer vanishes. Also, it is shown that the addition of an elastomer layer to a metal layer enhances ductility.

Fichier principal
Vignette du fichier
LEM3_NUMIFORM_2016_BENBETTAIEB (1.01 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-02901356 , version 1 (17-07-2020)

Licence

Identifiants

Citer

Holanyo K. Akpama, Mohamed Ben Bettaieb, Farid Abed-Meraim. Ductility prediction of substrate-supported metal layers based on rate-independent crystal plasticity theory. NUMIFORM 2016: The 12th International Conference on Numerical Methods in Industrial Forming, Jul 2016, Troyes, France. pp.8, ⟨10.1051/matecconf/20168002007⟩. ⟨hal-02901356⟩
76 Consultations
50 Téléchargements

Altmetric

Partager

  • More