A Study of the Possibility of Reducing the Weight of Armored Plating Using Complex Three-Layer Alloy Steel Plates for Armored Vehicle Cabins

In this paper, the authors study the process of penetrating complex three-layer plates made of Armox560T alloy steel of the total thickness of 10.5 mm by a 7.62 mm ARM2 bullet with a hard steel core (one of the most commonly occurring types). The study is conducted on eight models with different geometrical parameters and the bullet velocity of 830 m/s. Complex three-layer plates and a monolayer plate of the 12 mm thickness made of the same type of steel are analyzed and compared by weight, ballistic characteristics and the level of protection BR 7 according to the European standard EN 1063. The developed rational finite element models are presented for the complex three-layer plates and bullets. The models allow obtaining results with an acceptable accuracy and the minimal solution time using the LS-DYNA software complex. The main calculation results include the residual velocity and kinetic energy of the bullet after penetrating the three-layer plate, as well as the determination of its best geometric parameters that are recommended for use in armored vehicle cabins.

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