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COMPUTER HYDROMECHANICS, 2024
IX International Scientific & Practical Conference "Computer Hydromechanics"
HYDRODYNAMICS AND ACOUSTICS
2022 ◊ Volume 2 (92) ◊ Issue 3 ◊ p. 256-272
Yu. I. Voitenko*, V. V. Boiko*, O. O. Kostyuk**, Yu. M. Sidorenko***, S. V. Goshovskyi****
* Institute of Hydromechanics of NAS of Ukraine, Kyiv, Ukraine
**Section for Applied Problems of NAS of Ukraine, Kyiv, Ukraine
*** National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine
**** State Institution "Scientific Hydrophysical Centre of NAS of Ukraine", Kyiv, Ukraine
Modern shaped charges and ways of increasing their efficiency
Gidrodin. akust. 2022, 2(3):256-272
TEXT LANGUAGE: Ukrainian
ABSTRACT
An analysis of well-known theoretical and experimental studies of the functioning of shaped charges with liners of different shapes from different materials was performed to choose ways to improve shaped charges and obtain shaped charge jets and explosively formed projectiles with greater kinetic energy than for traditional forms (cone and sphere). The main and secondary factors that affect the kinetic energy of shaped charge jets and explosively formed projectiles and the penetration depth of dense barriers are highlighted, namely: energy characteristics of explosive materials (detonation velocity and explosion energy), shape, thickness, and material of the liner, detonation excitation scheme, presence of the charging case, as well as the initial temperature of the liner. The impact of the liner material and its manufacturing technology on the depth of penetration and the volume of the cavern was analyzed. Solid, porous, and composite porous materials are considered separately and the most promising of them for increasing the penetration depth and volume. A significant influence of the structure and chemical composition of the liner material on the performance of the shaped charge is noted, in particular, grain size and shape in solid metals, and grain size and shape in powder monometallic and composite materials. Reasonable ranges of the main design parameters of liners of cumulative charges of conical and close to its forms, which provide the maximum penetration depth of the barrier: angles at the top, thicknesses, as well as the effect of constancy or variability of the thickness of the liner on the parameters of shaped charge jets in free flight and the depth of penetration into the barrier. Methods of formation of gradientless or low-gradient compact elements by cumulative explosion, which have higher kinetic energy than traditional explosively formed projectiles, are considered. Further development of ideas about ways of prospective research with the aim of developing constructions of shaped charges and materials of liners to increase the penetration capacity of cumulative jets, compact elements, and explosively formed projectiles was obtained.
KEY WORDS
shaped charge, detonation, liner, cumulative jet, explosively formed projectiles