1.
Eur Phys J E Soft Matter
; 17(2): 237-46, 2005 Jun.
Artigo
em Inglês
| MEDLINE
| ID: mdl-15920666
RESUMO
We study the shearing of polydisperse and bidisperse media with a size ratio of 10. Simulations are performed with a two-dimensional shear cell using contact dynamics. With a truncated power law for the polydisperse media we find that they show a stronger dilatancy and greater resistance to shearing than bidisperse mixtures. To model additives used to control viscosity we introduce so-called "point-like particles". Even changing the kinematic behavior very little, the point-like particles reduce the force necessary to maintain a fixed shearing velocity.