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An Armour-Piercing Fin-Stabilized Discarding Sabot (APFSDS) is highly energetic and ballistic ammunition used for piercing armored vehicles and battle tanks. These ballistic rounds impart high kinetic energy to the target that involves high strain rates and melting temperatures. The lethality of ammunition is tested against RHA depth it would penetrate. This paper discusses the terminal ballistic aspect of the penetrator and presents the study of design parameters for an APFSDS to achieve optimal penetration. The trend of penetration depths across the range of length-to-diameter ratios is presented. A tungsten alloy APFSDS is tested against Rolled Homogenous Armour (RHA) via FEA simulations. A simplified penetrator model is created and parameterized in Design Modeler. Explicit dynamics numerical schemes are used. Johnson-Cook strength and failure models are chosen along with Mie-Grüneisen state of equation model. ANSYS Autodyn solver is used for simulating the impact.

Muhammad Atif Niaz, Quratulain, Badar Rashid, Asim Shehzad, Arshad Mehmood, Umair Salee. (2020) Design and Analysis of Armour-Piercing FinStabilized Discarding Sabot, Journal of Space Technology , Volume 10, Issue 1.
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