Abstract
Summary We investigated the penetration capabilities of segmented penetrators consisting of small aspect ratio segments, (1/8 ≤ L/D ≤ 1) using axisymmetric numerical simulations for constant mass, diameter, and collapsed length, tungsten alloy, long-rod penetrators impacting semi-infinite thick rolled homogeneous armor steel (RHA) at 2.6 km/s. The specific technical issues investigated were whether the total penetration of multiple segments is a constant multiple of the penetration of a single segment (not necessarily the first segment); whether the primary cause of any penetration degradation was due to entrance effects or to material remaining at the crater bottom; and whether the cumulative degradation effects for multiple segment impacts changed the optimum aspect ratio based upon single segment penetration.
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