Dynamics of drag and force distributions for projectile impact in a granular medium
Fluid Dynamics
2009-11-10 v2
Abstract
Our experiments and molecular dynamics simulations on a projectile penetrating a two-dimensional granular medium reveal that the mean deceleration of the projectile is constant and proportional to the impact velocity. Thus, the time taken for a projectile to decelerate to a stop is independent of its impact velocity. The simulations show that the probability distribution function of forces on grains is time-independent during a projectile's penetration of the medium. At all times the force distribution function decreases exponentially for large forces.
Keywords
Cite
@article{arxiv.physics/0312054,
title = {Dynamics of drag and force distributions for projectile impact in a granular medium},
author = {Massimo Pica Ciamarra and Antonio H. Lara and Andrew T. Lee and Daniel I. Goldman and Inna Vishik and Harry L. Swinney},
journal= {arXiv preprint arXiv:physics/0312054},
year = {2009}
}
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4 pages