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Article Dans Une Revue EPL - Europhysics Letters Année : 2003

Collision process of a bead on a two-dimensional bead packing: Importance of the inter-granular contacts

Résumé

The collision of an impacting bead on a 2D bead packing is experimentally investigated. It is found that the energy dissipated in the collision is strongly dependent on the density of inter-granular contacts in the packing. We show indeed that the energy released by the packing after the impact is increased when the density of inter-grain contacts is lowered. This increase manifests itself by means of an important augmentation of the number of grains ejected from the packing. In addition, we propose a phenomenological description of the propagation of the shock wave (induced by the impacting bead) through the packing. This description is inspired from percolation models and provides a plausible explanation for the increase of the energy released by a packing with a low density of inter-grain contacts.

Dates et versions

hal-04072591 , version 1 (18-04-2023)

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François Rioual, Alexandre Valance, D Bideau. Collision process of a bead on a two-dimensional bead packing: Importance of the inter-granular contacts. EPL - Europhysics Letters, 2003, 61 (2), pp.194-200. ⟨10.1209/epl/i2003-00212-8⟩. ⟨hal-04072591⟩
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