Title :

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

Author(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

Journal title :

Computers & Structures

Abbreviated title :

Computers & Structures

Volume number :

251

Pages :

106556

Publisher :

Elsevier BV

Publication date :

2021-07

ISSN :

0045-7949

English keyword(s) :

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

HAL domain(s) :

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

English abstract : [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 ...
Show more >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.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
Centrale Lille

Collections :

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

Submission date :

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