Stability of Monomer-Dimer Piles

Details Stability of Monomer-Dimer Piles Stability of Monomer-Dimer Piles

2001-11-16

arxiv.org/abs/cond-mat/0111311v1

Physics

Condensed Matter

Soft Condensed Matter

11 pages, 12 figures consisting of 21 eps files, submitted to PRE

Scientific paper

10.1103/PhysRevE.66.051307

We measure how strong, localized contact adhesion between grains affects the maximum static critical angle, theta_c, of a dry sand pile. By mixing dimer grains, each consisting of two spheres that have been rigidly bonded together, with simple spherical monomer grains, we create sandpiles that contain strong localized adhesion between a given particle and at most one of its neighbors. We find that tan(theta_c) increases from 0.45 to 1.1 and the grain packing fraction, Phi, decreases from 0.58 to 0.52 as we increase the relative number fraction of dimer particles in the pile, nu_d, from 0 to 1. We attribute the increase in tan(theta_c(nu_d)) to the enhanced stability of dimers on the surface, which reduces the density of monomers that need to be accomodated in the most stable surface traps. A full characterization and geometrical stability analysis of surface traps provides a good quantitative agreement between experiment and theory over a wide range of nu_d, without any fitting parameters.

Affiliated with

Also associated with

No associations

Rating

Stability of Monomer-Dimer Piles does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Stability of Monomer-Dimer Piles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stability of Monomer-Dimer Piles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-195137