Design of Shaped Charges with Optimum Armoured Penetration Efficiency

Abstract

In this article, we investigated several alternatives about how to increase the penetration efficiency by only changing the shaped charge liner geometries without changing the other warhead dimensions. In this context, 3 different orthographic designs were realized in 2 dimensions in Conical, Trumpet and Ellipsoid geometries in an outer shell similar to the standard warhead dimensions in the literature. The AUTODYN software package was used for the design and analysis. Simulation studies were carried out to specify the parameters that allow the determination of the most appropriate penetration efficiency with the selected liner geometries. After the type of the explosive and liner material together with liner thickness were determined, simulations of 3 different liner geometries were tested through AUTODYN to determine the jet formations and armor penetration efficiency values and the obtained values were compared with each other. As a result, it is understood that the highest penetration depth is achieved with the "Trumpet geometry" when the HMX explosive material, 1.5 mm liner thickness, and stand-off distance with a length of 1.5 times of Cone Diameter (CD) were used. Considering these results, it is evaluated that if high penetration depth is desired in the armor, it is appropriate to design a shaped charge with Trumpet Shaped Charge Liner (SCL) geometry, and if a large penetration hole is desired in the armor, it is appropriate to design a shaped charge with Ellipsoid SCL geometry.