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A thermodynamically consistent framework for saturated viscoplastic rock-materials subject to damage

Abstract : The aim of this study is to build a thermodynamically consistent theoretical framework to model viscoplasticity and damage in saturated geomaterials. The induced anisotropic damage is represented by a second-order tensor. The key point of the model formulation is the definition of a "double effective stress", stemming from the concept of "damaged effective stress" (used in Continuum Damage Mechanics to couple damage and viscoplasticity in solids), and from the concept of "hydro-mechanical effective stress" (used in poromechanics to account for solid-fluid interactions). The dissipation potential is expressed as a function of the "double effective stress", which makes it possible to couple creep, fluid flow and damage in a consistent framework. © 2012 Elsevier Ltd. All rights reserved.
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Submitted on : Wednesday, May 27, 2015 - 10:49:48 PM
Last modification on : Saturday, February 13, 2021 - 3:26:17 AM

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N. Dufour, H. Wong, C. Arson, F. Deleruyelle, Jean-Michel Pereira. A thermodynamically consistent framework for saturated viscoplastic rock-materials subject to damage. Mechanics Research Communications, Elsevier, 2012, 45, pp.15-21. ⟨10.1016/j.mechrescom.2012.06.009⟩. ⟨hal-01157369⟩

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