Asymptotic analysis of pore crack initiation near a free edge - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Theoretical and Applied Fracture Mechanics Année : 2021

Asymptotic analysis of pore crack initiation near a free edge

Résumé

The matched asymptotic (MA) approach of the coupled criterion (CC) enables studying crack initiation at a pore located near a free edge, which leads to a competition between three possible crack initiation mechanisms, namely crack initiation in the ligament, at the pore side opposite to the free edge or simultaneously at both pore sides. The mechanism that is the most likely to occur depends on both the pore-to-free edge ligament size and the material characteristic length to pore diameter ratio. Simultaneous crack initiations at both pore sides occur for large enough ligament size. For smaller ligament sizes, unilateral pore crack initiation is more likely to occur, within the ligament for small characteristic length to pore diameter ratios and at the pore side opposite to the free edge otherwise. The CC MA approach enables estimating the initiation remote imposed stress as well as the initiation crack length.
Fichier principal
Vignette du fichier
MAE_Porosity_cleanVersion.pdf (3.71 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03394408 , version 1 (22-10-2021)

Identifiants

Citer

Aurélien Doitrand, Dominique Leguillon. Asymptotic analysis of pore crack initiation near a free edge. Theoretical and Applied Fracture Mechanics, In press, ⟨10.1016/j.tafmec.2021.103125⟩. ⟨hal-03394408⟩
7 Consultations
43 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More