DOITRAND, Aurélien; MARTIN, Eric; LEGUILLON, Dominique

doi:10.1016/j.finel.2019.103344

MARTIN, Eric
Laboratoire des Composites Thermostructuraux [LCTS]

LEGUILLON, Dominique

Langue

Article de revue

Ce document a été publié dans

Finite Elements in Analysis and Design. 2020-01-01, vol. 168, p. 103344

Résumé en anglais

An implementation of the coupled criterion (CC) for crack initiation simulation in the commercial finite element (FE) code Abaqus/Standard is proposed. This finite fracture mechanics approach allows crack initiation to be modeled by fulfilling simultaneously a stress and an energy conditions, which results in the determination of the loading level and crack length at initiation. Two procedures are considered and compared: the first one relies on matched asymptotic expansions while the second one is based on full FE calculations. The asymptotic approach is computationally more efficient than the second one since it requires less calculations to be performed. However, it is restricted to cases for which the crack initiation length remains small compared to the smallest characteristic dimensions of the studied structure. For such cases, both methods leads to similar results as illustrated by crack initiation modeling of notched specimen under three point bending. The provided source codes and the tutorials help understanding and applying the CC for crack initiation modeling.< Réduire

Mots clés en anglais

Coupled criterion

Crack initiation

Brittle fracture

Finite element method

URI

https://oskar-bordeaux.fr/handle/20.500.12278/110154

DOI

http://dx.doi.org/10.1016/j.finel.2019.103344

Unités de recherche

Laboratoire des Composites Thermo Structuraux (LCTS) - UMR 5801

Voir/Ouvrir

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Numerical implementation of the coupled criterion: Matched asymptotic and full finite element approaches

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

URI

DOI

Unités de recherche