Starting to move through a granular medium
Soft Condensed Matter
2015-05-20 v1
Abstract
We explore the process of initiating motion through a granular medium by measuring the force required to push a flat circular plate upward from underneath the medium. In contrast to previous measurements of the drag and penetration forces, which were conducted during steady state motion, the initiation force has a robust dependence on the diameter of the grains in the medium. We attribute this dependence to the requirement for local dilation of the grains around the circumference of the plate, as evidenced by an observed linear dependence of the initiation force on the plate diameter.
Keywords
Cite
@article{arxiv.1012.2151,
title = {Starting to move through a granular medium},
author = {D. J. Costantino and T. J. Scheidemantel and M. B. Stone and C. Conger and K. Klein and M. Lohr and Z. Modig and P. Schiffer},
journal= {arXiv preprint arXiv:1012.2151},
year = {2015}
}