A discrete/continuous coupled approach for modeling impacts on cellular geostructures

Un modèle couplé discret/continu pour modéliser les impacts sur géostructures cellulaires

Breugnot, A. ; Lambert, S. ; Villard, P. ; Gotteland, P.

Type de document
Article de revue scientifique à comité de lecture
Langue
Anglais
Affiliation de l'auteur
CNRS UMR 5521 L3SR GRENOBLE FRA ; IRSTEA GRENOBLE UR ETGR FRA ; CNRS UMR 5521 L3SR GRENOBLE FRA ; CNRS UMR 5521 L3SR GRENOBLE FRA
Année
2016
Résumé / Abstract
This article presents a numerical model coupling the finite difference method and discrete element methods (FDM, DEM) for simulating the response of cellular geostructures to impacts. DEM is used in the vicinity of the impacted area while FDM is used far away. The continuity between the DEM and FDM domains is insured using the edge-to-edge method. The numerical parameters are calibrated based on compression and impact experiments conducted on elementary cells. Numerical simulations at the structure scale are compared with real-scale experimental data. The response of the structure is addressed varying the impact conditions. The projectile shape and the position of the impact point appear to be the most influential parameters.
Source
Rock Mechanics and Rock Engineering, vol. 49, num. 5, p. 1831 - 1848

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