Experimental and numerical analysis of piercing with shaped charge of armor steel

Abstract

Abstract The tests of resistance to dynamic impact with shaped charge (ŁK) were carried out on a homogeneous armor plate made of Armox 370T Class 1 steel, commonly used in the production of ballistic shields. The chemical composition of the steel was determined in spectrometric tests using a spark discharge spectrometer S1 MiniLab 150 by GNR INDIA and confirmed by a GDS-750-QDP glow discharge spectrometer by LECO. Composition tests confirmed the compliance of the chemical composition of the board with the EN 10029 standard for the Armox 370T grade. Numerical calculations of the considered penetration with a shaped charge were carried out in the ABAQUS program. For this purpose, geometric models were made in the Inventor program and then the geometric models were exported in the .step format to the computing environment. The Johnson-Cook (J-C) mathematical model was used for elastic-plastic materials, including plastic behavior of material. The calculations were based on numerical models separately established for individual elements of the load and cover, assuming material constants appropriate for the materials used for the transition from hybrid methods using the SPH and FEM methods.