Mechanics & Industry
Volume 20, Number 1, 2019
|Number of page(s)||16|
|Published online||02 April 2019|
A micromechanical inspired model for the coupled to damage elasto-plastic behavior of geomaterials under compression
Laboratoire de Mécanique des Solides, École Polytechnique, 91128 Palaiseau, France
2 Institut des Sciences de la Mécanique et Applications Industrielles, UMR EDF-CNRS-CEA-ENSTA 9219, Université Paris Saclay, 91120 Palaiseau, France
* e-mail: email@example.com
Accepted: 13 November 2018
We propose an elasto-plastic model coupled with damage for the behavior of geomaterials in compression. The model is based on the properties, shown in [S. Andrieux, et al., Un modèle de matériau microfissuré pour les bétons et les roches, J. Mécanique Théorique Appliquée 5 (1986) 471?513], of microcracked materials when the microcracks are closed with a friction between their lips. That leads to a macroscopic model coupling damage and plasticity where the plasticity yield criterion is of the Drucker–Prager type with kinematical hardening. Adopting an associative flow rule for the plasticity and a standard energetic criterion for damage, the properties of such a model are illustrated in a triaxial test with a fixed confining pressure.
Key words: Plasticity / damage / compression test / geomaterials / dilatancy
© J.-J. Marigo and K. Kazymyrenko, published by EDP Sciences 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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