Force fabric and macroscopic friction in two-dimensional granular materials

Abstract:

We study the relationship between the local grain-grain friction and the force texture in a granular pile to its macroscopic emergent frictional values. We account for the force geometrical properties by a model that assumes the existence of slide planes that define macroscopic friction angles. The model depends on the measured angular distribution of contact forces and a single parameter, to be fitted, that is a function of the roughness of the slide plane. The model is tested by a state-of-the-art model of a two-dimensional granular pile built by depositing grains under gravity and submitted to an external uniaxial stress.

Año de publicación:

2010

Keywords:

Fuente:

google