Penetration depth for shallow impact cratering

Details Penetration depth for shallow impact cratering Penetration depth for shallow impact cratering

2004-11-09

arxiv.org/abs/cond-mat/0411231v3

Phys. Rev. E 71, 051305 (2005)

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevE.71.051305

We present data for the penetration of a variety of spheres, dropped from rest, into a level non-cohesive granular medium. We improve upon our earlier work [Uehara {\it et al.} Phys. Rev. Lett. {\bf 90}, 194301 (2003)] in three regards. First, we explore the behavior vs sphere diameter and density more systematically, by holding one of these parameters constant while varying the other. Second, we prepare the granular medium more reproducibly and, third, we measure the penetration depth more accurately. The new data support our previous conclusion that the penetration depth is proportional to the 1/2 power of sphere density, the 2/3 power of sphere diameter, and the 1/3 power of total drop distance.

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