Department of Physics Papers
Document Type
Journal Article
Date of this Version
5-29-2013
Publication Source
Physical Review E
Volume
87
Issue
5
Start Page
052208-1
Last Page
052208-5
DOI
10.1103/PhysRevE.87.052208
Abstract
Impact dynamics is measured for spherical and cylindrical projectiles of many different densities dropped onto a variety non-cohesive granular media. The results are analyzed in terms of the material-dependent scaling of the inertial and frictional drag contributions to the total stopping force. The inertial drag force scales similar to that in fluids, except that it depends on the internal friction coefficient. The frictional drag force scales as the square-root of the density of granular medium and projectile, and hence cannot be explained by the combination of granular hydrostatic pressure and Coulomb friction law. The combined results provide an explanation for the previously observed penetration depth scaling.
Copyright/Permission Statement
© 2013 American Physical Society. You can view the original article at: https://journals.aps.org/pre/abstract/10.1103/PhysRevE.87.052208
Recommended Citation
Katsuragi, H., & Durian, D. J. (2013). Drag Force Scaling for Penetration Into Granular Media. Physical Review E, 87 (5), 052208-1-052208-5. http://dx.doi.org/10.1103/PhysRevE.87.052208
Date Posted: 13 October 2017
This document has been peer reviewed.
Comments
At the time of publication, author Hiroaki Katsuragi was affiliated with Nagoya University. Currently, (s)he is a faculty member at the Physics Department at the University of Pennsylvania.