Microbranching instability in phase-field modelling of dynamic brittle fracture - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Applied Physics Letters Année : 2017

Microbranching instability in phase-field modelling of dynamic brittle fracture

(1, 2) , (2)
1
2

Résumé

The microbranching instability occurring for rapidly propagating cracks in brittle materials has been described in various experiments as an intrinsically three-dimensional phenomenon. Using a variational phase-field model, we show that the microbranching process is, indeed, a three-dimensional instability which exhibits a strong dependence on the sample width and can be suppressed for very thin samples. We show that the phase-field internal length scale is the decisive variable governing the branching pattern, which can be either localized in the transverse direction as observed in glass for example, or, on the contrary, almost translational invariant with quasi-periodic structures, as observed in PMMA.
Fichier principal
Vignette du fichier
microbranching_apl_revision.pdf (3.37 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01508202 , version 1 (14-04-2017)

Identifiants

Citer

Jeremy Bleyer, Jean-François Molinari. Microbranching instability in phase-field modelling of dynamic brittle fracture. Applied Physics Letters, 2017, 110 (15), pp.151903. ⟨10.1063/1.4980064⟩. ⟨hal-01508202⟩
103 Consultations
293 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More