Epic-2 Calculated Impact Loading Histories of Thin Plates
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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Although the EPIC-2 code can predict the ballistic shock environments in projectile-impacted targets, these targets must be axisymmetric. By modifying the code to calculate the history of an impacting projectile on the target, one can use the loading history as input for a finite element analysis of the ballistic shock in non-axisymmetric targets. Loading histories of 20 mm fragment simulator projectiles for impact velocities of 366 ms and 1012ms on 38mm x 914 mm circular rolled homogeneous armor plates have been calculated by the EPIC-2 code and have been used in ADINA finite element structural response analyses of the plate. Comparisons of EPIC-2 and ADINA responses calculations show that the EPIC-2 code can be used to calculate loading histories which do represent the loading of a target by nonperforating projectiles. Keywords Terminal ballistics, Impact, Computer programs, EPIC-2, ADINA, Penetration mechanics, Ballistic impact, Shock, Loading histories, Shock spectra, Computer simulation, Hydro-code, Finite element code.
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