On numerical implementation of a coupled rate dependent damage-plasticity constitutive model for concrete in application to high-rate dynamics

Abstract : In this work we consider numerical implementation of the modified version of a coupled rate dependent damage-plasticity concrete model first proposed in [8]. We developed an explicit-implicit integration scheme, implemented it in LS-DYNA fi- nite element code, with explicit part dealing with large global problem of equations of motion and implicit part treating local evolution equations. We also provide a detailed consideration of the numerical stability of this kind of scheme for rate- dependent damage model. Several numerical tests, both simple ones and a complex problem of the large aircraft impact on a large concrete slab demonstrate the effi- ciency of the proposed numerical implementation. Comparison between simulations of impact of equivalent aircraft engine missiles and the tests carried out in Sandia laboratory [25] also demonstrates its efficiency.
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Guillaume Hervé, Fabrice Gatuingt, Adnan Ibrahimbegovic. On numerical implementation of a coupled rate dependent damage-plasticity constitutive model for concrete in application to high-rate dynamics. Engineering Computations, Emerald, 2005, 22 (5-6), pp.583-604. ⟨hal-00994400⟩

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