Effect of different filling protocols in granular matter thermodynamic properties.

P.A. GAGO; M.A. MADRID

CABA

Congreso; StatPhys 27; 2019

In the statistic mechanical description of static granular matter, the system packing fraction is a fundamental property [1-5]. Nevertheless, to create an homogeneous granular sample in real systems does not result simple [5-6]. In a resemblance with glasses, the way in which granular energy is dissipated in granular systems to reach a static configuration strongly affects the system density. This dissipation is usually driven by gravity, introducing a preferential direction into the system. Moreover, as the dissipation occurs between particle-particle and particle-wall interactions, it creates different stresses states for the system.In this work we study different pouring protocols for the filling of a rigid container with granular material. We analyse the effect that these protocols have in the system density and stress distribution using numerical simulation of soft dissipative spheres with a discrete element method model.