Deceleration Of Projectiles In Sand

Date

2012-03

Authors

Bless, S.
Cooper, W.
Watanabe, K.
Peden, R.

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Abstract

Penetration of projectiles was measured for hemispherical and conical nose shapes penetrating granular media. Targets were beds of Ottawa sand and Eglin sand. Projectiles were rigid metals. Experimental parameters that were varied included velocity (from 300 to 600 m/s), nose shape, sand density, and scale (from 5 mm to 20 mm). Strong evidence for scale effects is found: 5 mm diameter projectiles are less effective penetrators than 12.5, 15, or 20 mm diameter penetrators.

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Citation

Stephan Bless, William Cooper, Keiko Watanabe, and Robert Peden. AIP Conference Proceedings 1426, 45 (Mar., 2012); doi: 10.1063/1.3686217