Numerical simulations of the compaction of assemblies of rubberlike particles: A quantitative comparison with experiments

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

1 PMMD - Physique et Mécanique des Milieux Divisés
2 Servex - Moyens expérimentaux

Using the contact dymanics method together with the finite element method, we simulate the uniaxial compression of assemblies of elastic cylinders. The numerical model accounts for finite deformations of the particles through the neo-Hookean constitutive equation and solid friction between the particles. A quantitative comparison with experiments carried out with centimetric rubberlike cylinders, with local deformations of the particles determined by image correlation, is proposed. We show that the simulations accurately capture the details of both the microstructure and the macroscopic behavior of the real granular system, demonstrating the relevancy of the numerical approach.

Mots clés: Finite elements; Contact dynamics; Elasticity

Domaines: Matériaux; Mécanique des matériaux [physics.class-ph]

Thi-Lo Vu, Jonathan Barés, Serge Mora, Saeid Nezamabadi. Numerical simulations of the compaction of assemblies of rubberlike particles: A quantitative comparison with experiments. Physical Review E , 2019, 99 (6), ⟨10.1103/PhysRevE.99.062903⟩. ⟨hal-02153495⟩