Titre :

Strong discontinuity FE analysis for heterogeneous materials: The role of crack closure mechanism

Auteur(s) :

Sun, Yue [Auteur]
Laboratoire de Mécanique Multiphysique Multiéchelle [LaMcube]
Roubin, Emmanuel [Auteur]
Laboratoire sols, solides, structures - risques [Grenoble] [3SR]
Shao, Jianfu [Auteur]
Laboratoire de Mécanique, Multi-physique, Multi-échelle (LaMcube) - UMR 9013
Colliat, Jean Baptiste [Auteur]
Laboratoire de Mécanique, Multi-physique, Multi-échelle (LaMcube) - UMR 9013

Titre de la revue :

Computers & Structures

Nom court de la revue :

Computers & Structures

Numéro :

251

Pagination :

106556

Éditeur :

Elsevier BV

Date de publication :

2021-07

ISSN :

0045-7949

Mot(s)-clé(s) en anglais :

Heterogeneous quasi-brittle materials
E-FEM method
Mesoscopic scale
Strong discontinuity analysis
Crack closure mechanism

Discipline(s) HAL :

Sciences de l'ingénieur [physics]/Mécanique [physics.med-ph]

Résumé en anglais : [en]

We present a Finite Element model, which is devoted to describing the failure mechanics of quasi-brittle materials (e.g. concrete), such as the stiffness recovery effect at the transition from tension to compression, and ...
Lire la suite >We present a Finite Element model, which is devoted to describing the failure mechanics of quasi-brittle materials (e.g. concrete), such as the stiffness recovery effect at the transition from tension to compression, and the cyclic behavior with a low number of cycles. The material is studied at the meso-scale, and thus considered as a heterogeneous medium. The model is formulated within the framework of the strong discontinuity analysis and implemented using the Enhanced Finite Element Method (E-FEM). The key point is to locally embed the discontinuities inside the finite elements. Here, we take advantage of this strategy for two kinds of discontinuities. On the one hand, strong discontinuities aim to model cracks, at fine scale, that can open along mode-I. On the other hand, weak discontinuities are used to describe the elastic heterogeneity. In addition to the initiation and propagation of cracks, our main contribution is to add a closure mechanism. We show the ability of the model to simulate some of the well-known characteristics of such materials at macroscale, such as the unsymmetrical tension/compression behavior, the stiffness recovery effect, and hysterical load/displacement curve.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
Centrale Lille

Collections :

• Laboratoire de Mécanique, Multi-physique, Multi-échelle (LaMcube) - UMR 9013

Date de dépôt :

2022-07-05T07:36:55Z
2022-07-05T12:41:50Z