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Communication Dans Un Congrès Année : 2009

Hyperelasticity with volumetric damage

Résumé

The present paper presents a simple framework to model continuous volumetric damage in elastomers. The formulation predicts phenomenologically the growth of microscopic cavities, and can be applied to both static and fatigue loading conditions. This first version of the approach cannot handle cavitation and is limited to small values of porosities. The derivation is based on the use of a simple scalar damage parameter, the irreversible volume change, and takes naturally into account the change in stiffness through the explicit dependence of the material parameters on the damage variable. The thermo-dynamic force which drives the volume change contains the hydrostatic stress and also a contribution due to stiffness evolution. As a first application, a damage compressible neo-Hookean constitutive equation is derived and a simple example is studied.
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hal-01387686 , version 1 (26-10-2016)

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  • HAL Id : hal-01387686 , version 1

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Erwan Verron, Grégory Chagnon, Jean-Benoit Le Cam. Hyperelasticity with volumetric damage. Sixth European Conference on Constitutive Models for Rubber (ECCMR VI), 2009, Dresde, Germany. ⟨hal-01387686⟩
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