Abstract
Explosively formed projectile (EFP) is a self-forging shape charged structure having very high penetration ability compared to conventional kinetic energy projectile. The penetration capability of an EFP is strongly dependent on various design parameters. The main parameters can be roughly divided into geometric and material parameters used in the warhead configuration.
 The present research is an effort to study the effect of metal casing thickness, type of metal used for casing, explosive type, liner thickness, type and configuration on the formation of EFP. Effectivness of an EFP is studied in terms of final velocity and shape of formed penetrator. The study is carried out by performing a number of simulations by using explicit finite element (FE) hydrocode ANSYS/Autodyn.
Highlights
An explosively formed projectile system consists of charge, liner, casing and wave-shaper
Explosively formed projectile (EFP) is a self-forging shape charged structure having very high penetration ability compared to conventional kinetic energy projectile
The penetration capability of an EFP is strongly dependent on various design parameters
Summary
An explosively formed projectile system consists of charge, liner, casing and wave-shaper. Two major applications have evolved since 1975 for EFP warheads, namely, long-standoff sensor-fuzed submunitions and medium-standoff, close-overflight missiles, as depicted in figure 4. The former application, which is the more traditional one, requires the formation of a single-piece EFP capable of flying in a stable position to the target. The need for an aerodynamic shape is not necessary for these applications because of the short distance the EFP must travel, the length of the rod was increased and the flared tail was eliminated from the design. Some of these rods are purposely stretched beyond their breaking point and fracture into several pieces resulting in greater total length [5]
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