Compaction of elastic granular materials: inter-particles friction effects and plastic events

Thi-Lo Vu (1, 2) , Saeid Nezamabadi (1, 3) , Serge Mora (1)

1 PMMD - Physique et Mécanique des Milieux Divisés
2 Ton Duc Thang University [Hô-Chi-Minh-City]
3 UMR IATE - Ingénierie des Agro-polymères et Technologies Émergentes

The uni-axial compaction of granular materials made of elastic neo-Hookean particles is investigated in the quasi-static regime. Two-dimensional disk assemblies are simulated using the Finite Element model coupled with Contact Dynamics method for dealing both with finite deformations of the particles and contact interactions. Due to large deformations of the particles, the packing fraction of the system increases continuously during the compaction process, reaching values close to 1. The influence of the coefficient of friction between the particles on the macroscopic and micro-structural behaviors of the system is thoroughly discussed.

Mots clés: Neo-Hookean; Granular; Elasticity

Domaines: Mécanique des matériaux [physics.class-ph]; Matière Molle [cond-mat.soft]

Thi-Lo Vu, Saeid Nezamabadi, Serge Mora. Compaction of elastic granular materials: inter-particles friction effects and plastic events. Soft Matter, 2020, 16 (3), pp.679-687. ⟨10.1039/C9SM01947B⟩. ⟨hal-02404009⟩