Drag Force Scaling for Penetration Into Granular Media

Loading...
Thumbnail Image
Penn collection
Department of Physics Papers
Degree type
Discipline
Subject
Physical Sciences and Mathematics
Physics
Funder
Grant number
License
Copyright date
Distributor
Related resources
Contributor
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.

Advisor
Date Range for Data Collection (Start Date)
Date Range for Data Collection (End Date)
Digital Object Identifier
Series name and number
Publication date
2013-05-29
Journal title
Physical Review E
Volume number
Issue number
Publisher
Publisher DOI
Journal Issue
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.
Recommended citation
Collection