Projectile-shape dependence of impact craters in loose granular media

Abstract

We report on the penetration of cylindrical projectiles dropped from rest into a dry, noncohesive granular medium. The cylinder length, diameter, density, and tip shape are all explicitly varied. For deep penetrations, as compared to the cylinder diameter, the data collapse onto a single scaling law that varies as the 1/3 power of the total drop distance, the 1/2 power of cylinder length, and the 1/6 power of cylinder diameter. For shallow penetrations, the projectile shape plays a crucial role with sharper objects penetrating deeper.

3 pages, 3 figures; experiment

References in corpus (1)

• Low-speed impact craters in loose granular media

Cited by in corpus (8)

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• Dynamics of shallow impact cratering
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• Collisional Model of Energy Dissipation in 3D Granular Impact
• Granular Response to Impact: Topology of the Force Networks
• An experimental study of low-velocity impacts into granular material in reduced gravity
• Granular Impact: A Grain-scale Approach