Dynamics of shallow impact cratering

Details Dynamics of shallow impact cratering Dynamics of shallow impact cratering

2005-03-17

arxiv.org/abs/cond-mat/0503454v2

Phys. Rev. E 72, 041305 (2005)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, experiment

Scientific paper

10.1103/PhysRevE.72.041305

We present data for the time-dependence of wooden spheres penetrating into a loose non-cohesive packing of glass beads. The stopping time is a factor of three longer than the time $d/v_\circ$ needed to travel the total penetration distance $d$ at the impact speed $v_\circ$. The acceleration decreases monotonically throughout the impact. These kinematics are modelled by a position- and velocity-dependent stopping force that is constrained to reproduce prior observations for the scaling of the penetration depth with the total drop distance.

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