Molecular Dynamics of Comminution in Ball Mills
Materials Science
2009-11-07 v1
Abstract
We investigate autogenous fragmentation of dry granular material in rotating cylinders using two-dimensional molecular dynamics. By evaluation of spatial force distributions achieved numerically for various rotation velocities we argue that comminution occurs mainly due to the existence of force chains. A statistical analysis of theses force chains explains the spatial distribution of comminution efficiency in ball mills as measured experimentally by Rothkegel and Rolf. For animated sequences of our simulations see http://summa.physik.hu-berlin.de/~kies/Research/RotatingCylinder/rotatingcylind er.html
Cite
@article{arxiv.cond-mat/0203372,
title = {Molecular Dynamics of Comminution in Ball Mills},
author = {Volkhard Buchholtz and Jan A. Freund and Thorsten Poeschel},
journal= {arXiv preprint arXiv:cond-mat/0203372},
year = {2009}
}
Comments
15 pages, 13 figures