Effect of applied interparticle force on the static and dynamic angles of repose of spherical granular material.

The static angle of repose for iron spheres in a narrow box, and the dynamic angle of repose for iron spheres in a narrow, half-filled rotating drum is investigated. A feature of this paper is the use of a homogenous magnetic field to induce an attractive interparticle force, allowing a wide range of angles of repose to be investigated and characterized as a function of interparticle force. The static and dynamic angles of repose were found to increase approximately linearly with increasing interparticle force.