On the possibility of using shaped charges with combined liners to obtain aluminum particles with speeds at the 16 km/s level

Abstract

Explosive gun launchers are used to test rocket and space technology systems for persistence to the effects of meteoroids and fragments of space debris. Based on numerical simulation in the framework of a two-dimensional axisymmetric problem of continuum mechanics, possibilities of obtaining aluminum particles with speeds of up to 16 km/s were considered using shaped charges with a combined shaped charge liners. A high-speed particle is formed as a result of the “cut-off” by the collapsing cylindrical part of the head section combined liner of the jet flow appearing during the collapse of the liner jet-forming part. Simulation was carried out in regard to a shaped charge with the 100 mm diameter using the ANSYS/AUTODYN and ERUDIT computer systems. To achieve the objective set, the liner jet-forming part was of digressive thickness, and its limiting surfaces had the shape of semi-ellipsoid surfaces or revolution semi super ellipsoid. Based on the calculation results, combined liner geometric parameters were selected making it possible to form an aluminum particle with a speed at the 16 km/s level and its mass of tenths of a gram.