USE OF SHAPED CHARGES WITH VARIOUS LINERS FOR THE FORMATION OF HIGH-VELOCITY ALUMINUM PARTICLES

Tests of rocket and space equipment objects in terrestrial conditions for shock resistance to the impact of meteoroids and space debris can be carried out using shaped charges. To substantiate the design parameters of shaped charges ensuring the formation of aluminum particles in a broad velocity range (from 2.5 to 16 km/s), numerical simulation has been conducted for the process of the said formation within the framework of a two-dimensional axisymmetric problem of continuum mechanics using ANSYS/AUTODYN, ERUDIT, and KOLDUN computer systems. In calculations, consideration has been given to shaped charges with a diameter from 20 to 100 mm with aluminum liners of various shape. It has been shown that the formation of particles with velocities close to the lower boundary of the considered range is ensured by gently sloping segmental degressive-thickness liners. For the formation of higher-velocity particles with velocities above 5 km/s, it is suggested that use be made of combined liners whose jet-forming portion has the shape of a hemisphere of constant thickness or the shape of a semi-ellipsoid or semisuperellipsoid of rotation
Tests of rocket and space equipment objects in terrestrial conditions for shock resistance to the impact of meteoroids and space debris can be carried out using shaped charges. To substantiate the design parameters of shaped charges ensuring the formation of aluminum particles in a broad velocity range (from 2.5 to 16 km/s), numerical simulation has been conducted for the process of the said formation within the framework of a two-dimensional axisymmetric problem of continuum mechanics using ANSYS/AUTODYN, ERUDIT, and KOLDUN computer systems. In calculations, consideration has been given to shaped charges with a diameter from 20 to 100 mm with aluminum liners of various shape. It has been shown that the formation of particles with velocities close to the lower boundary of the considered range is ensured by gently sloping segmental degressive-thickness liners. For the formation of higher-velocity particles with velocities above 5 km/s, it is suggested that use be made of combined liners whose jet-forming portion has the shape of a hemisphere of constant thickness or the shape of a semi-ellipsoid or semisuperellipsoid of rotation
Author:  V. I. Kolpakov, S. V. Fedorov, E. P. Vinogradova, I. A. Bolotina
Keywords:  space debris, meteoroid impact, high-velocity aluminum element, explosion, shaped charge, segmental liner, combined liner, numerical simulation
Page:  695