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Damage modeling for saturated porous media : a multi-scale approach

Abstract : This work presents the constitutive modeling of a geomaterial consisting of a deformableand saturated porous matrix including a periodic distribution of evolving fluid-filledcavities. The homogenization method based on two-scale asymptotic developments isused in order to deduce a model able to describe the macroscopic hydro-mechanicalcoupling. By taking into account the cavity growth and without any phenomenologicalassumption, it is proposed a mesoscopic energy analysis coupled with the homogenizationscheme which provides a damage evolution law. In this way, a direct link between themeso-structural fracture phenomena and the corresponding macroscopic damage isestablished. Lastly, a numerical study of the local macroscopic hydro-mechanical damage behaviour is presented.
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  • HAL Id : tel-01770114, version 2

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Fabrizio Gemelli. Damage modeling for saturated porous media : a multi-scale approach. Mechanics of the solides [physics.class-ph]. Université de Grenoble; Università degli studi di Roma "Tor Vergata" (1972-..), 2012. English. ⟨NNT : 2012GRENI113⟩. ⟨tel-01770114v2⟩

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