Discrete element modelling of concrete submitted to dynamic loading at high strain rates - Université Grenoble Alpes
Article Dans Une Revue Computers & Structures Année : 2004

Discrete element modelling of concrete submitted to dynamic loading at high strain rates

Résumé

The use of a 3D discrete element method (DEM) is proposed to study concrete submitted to dynamic loading. The model has already been validated through quasi-static simulations. This paper aims first at extending the validation of the model and at contributing to the understanding of the physical mechanisms in stake. Once the correct quasi-static identification of the model parameters is done, compressive dynamic tests are first simulated. Unchanged, the model proves able to reproduce the concrete strain rate dependency, and confirms the inertia-based hypothesis at high strain rates. Dynamic tensile tests show that a local rate effect has to be introduced to reproduce the experimental rate dependency, which would then be a material-intrinsic effect.
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hal-02003994 , version 1 (18-12-2024)

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Sébastien Hentz, Frédéric Donzé, Laurent Daudeville. Discrete element modelling of concrete submitted to dynamic loading at high strain rates. Computers & Structures, 2004, 82 (29-30), pp.2509-2524. ⟨10.1016/j.compstruc.2004.05.016⟩. ⟨hal-02003994⟩

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