Journal of Materials and Engineering Structures
Volume 5, Numéro 3, Pages 209-221
2018-09-30
Numerical Approach Of The Damage Of Quasi-fragile Materials: Case Of The Concrete
Auteurs : Khelifi Samia . Ait Aider Hacene . Hannachi Naceur Eddine . Meghlat El Mahdi .
Résumé
The heterogeneous materials with fragile matrix behave in a softening manner after the elastic phase. This degradation can be modeled by the mechanics of the continuous damage by the introduction of a variable which measures the reduction of the resistant surface due to the initiation and the propagation of cracks. The Mazars model chosen for our study is isotropic and takes in account the asymmetrical behavior of concrete (traction-compression). The model is implemented in a finite element program working with GID interface, for the simulation of the real behavior of the material up to ruin. The application of the program to simple structures shows the complexity of the model to accurately describe the behavior of such a material. The main objective of our work is then, to highlight the limits of such a formulation by exploiting the results resulting from the simulation.
Mots clés
Damage; Isotropic; Finite Elements; Concrete
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