Computational Predictions of Rear Surface Velocities for Metal Plates under BallisticImpact

Report No. ARL-TR-7327
Authors: Robert Doney; Joel Stewart
Date/Pages: June 2015; 40 pages
Abstract: We are interested in quantifying the rear surface (leading-edge) velocities of a series of metal plates as a function of their displacement for impactor diameter, d, and plate thickness, t, such that their ratio, d/t = {0:5; 1; 2}. Two different plate thicknesses—3.175 and 6.35 mm (1/8 and 1/4-inch, respectively)—are investigated along with 2 different impactor velocities, v = {2:3; 8:0} mm/μs. Lastly we investigate these parameters for several common armor materials: rolled homogeneous armor, Ti6Al4V, and aluminum 6061-T6. There are a variety of applications for which this information is useful, including material model validation and ballistic limit evaluation.
Distribution: Approved for public release
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Last Update / Reviewed: June 1, 2015