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

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.

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Date Posted:10 October 2017

This document has been peer reviewed.