Regular Article

VDT microplane model with anisotropic effectiveness and plasticity

¹ Institut Pprime (UPR CNRS 3346) − ENSMA, Université de Poitiers, CNRS 1, avenue Clément Ader – BP 40109–86961 Futuroscope Cedex, France
² Laboratoire de Mécanique et Rhéologie, E.A. 2640, B.P. 3410, INSA-CVL, Université Franҫois Rabelais de Tours, 41034 Blois Cedex, France
³ Laboratoire de Physico-Chimie des Matériaux Appliqués, ENSAM CASABLANCA, HASSAN II University of Casablanca, Casablanca, Morocco
⁴ CEA, DAM, Le Ripault, 37260 Monts, France

^* e-mail: a.benelfellah@gmail.com

Received: 1 December 2015
Accepted: 22 September 2017

Abstract

The opening-closing state of the microcracks is a kinematic phenomenon usually modeled using a set of damage effectiveness variables, which results in different elastic responses for the same damage level. In this work, the microplane model with volumetric, deviatoric and tangential decomposition denoted V-D-T is modified. The influence of the confining pressure is taken into account in the damage variables evolution laws. For a better understanding of the mechanisms introduced into the model, the damage rosettes are presented for a strain given level. The model is confirmed through comparisons of the simulations with the experimental results of monotonic, and cyclic tensile and compressive testing with different levels of confining pressure.