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COMPUTER HYDROMECHANICS, 2024 (updated)
IX International Scientific & Practical Conference "Computer Hydromechanics"
HYDRODYNAMICS AND ACOUSTICS
2024 ◊ Volume 3 (93) ◊ Issue 1 ◊ p. 16-31
Yu. I. Voitenko*, Yu. M. Sidorenko**, V. V. Boiko*, A. L. Han**, A. M. Pasichnyk*, V. P. Buhaiets***
* Institute of Hydromechanics of NAS of Ukraine, Kyiv, Ukraine
** National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine
***
Scientific and Engineering Centre "Explosion Processing of Materials"
of E. O. Paton Electric Welding Institute of NAS of Ukraine, Glevaha, Kyiv obl., Ukraine
Physical and material science bases of increasing the efficiency\break of armor penetration by cumulative charges
Gidrodin. akust. 2024, 3(1):016-031
TEXT LANGUAGE: Ukrainian
ABSTRACT
The paper analyzes the results of modeling the functioning of cumulative charges intended for the explosive forming of projectiles and elongated high-speed elements. Given the possibility of their destruction in free flight due to significant velocity gradients along the element, the careful selection of materials and possible preliminary tests are necessary when choosing lining materials and designing charges. The simulation results relate to two detonation excitation schemes: from a point on the axis of symmetry and along an annular contour in the presence of an inert lens. The results of modeling the functioning of cumulative charges intended for forming the cumulative jets with various shapes of liners and detonation excitation schemes are presented. The numerical data are compared with that from experimental studies obtained on the model charges. The results of experiments on the penetration of metal and combined (metal-concrete, metal-soil) targets by charges of various designs are summarized. The impact of the density, speed of sound, and porosity of the lining materials, as well as the strength and hardness of the target materials, on the penetration depth is considered. Some described experiments deal with self-made explosive materials having low detonation speeds, with the effect of cumulation of explosion energy. In particular, we propose ways to increase the efficiency of cumulative charges by using new materials, micro-laminates of various metals, materials with gradient properties, etc. The obtained conclusions can be used in humanitarian demining and disposal of ammunition. Another application for the results of the optimization of the lining form and materials of cumulative notches is the designing of deep penetration charges for the oil and gas extraction industry.
KEY WORDS
shaped charge, detonation, liner, cumulative jet, explosively formed projectile