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Technical gazette, Vol. 26 No. 6, 2019.

Original scientific paper

https://doi.org/10.17559/TV-20190216141334

Improvement of Shaped Charge Penetration Capability and Disturbation of the Jet by Explosive Reactive Armor

Hicham Kemmoukhe orcid id orcid.org/0000-0002-6644-0602 ; University of Defence, Military Academy, Pavla Jurišića Šturma 30, 11000 Belgrade, Serbia
Zijah Burzić orcid id orcid.org/0000-0002-4759-9853 ; Military Technical Institute, Ratka Resanovića 1, 11030 Belgrade, Serbia
Saša Savić ; Military Technical Institute, Ratka Resanovića 1, 11030 Belgrade, Serbia
Slavica Terzić ; Military Technical Institute, Ratka Resanovića 1, 11030 Belgrade, Serbia
Danica Simić* ; Military Technical Institute, Ratka Resanovića 1, 11030 Belgrade, Serbia
Miodrag Lisov ; Military Technical Institute, Ratka Resanovića 1, 11030 Belgrade, Serbia

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Abstract

This paper presents a numerical study of the effect of main parameters (liner material, explosive charge, stand-off distance and the presence of the wave-shaper), on one hand, on the jet formation, jet velocity and the jet length, and on the other hand, on the penetration depth. We propose a numerical approach to evaluate their effects on the performance of the shaped charge. AUTODYN-2D software is used for numerical simulations of the shaped charge. The multi material Euler solver of the AUTODYN is used for the jet formation investigation, whereas, Lagrange solver is used for the resolution of the penetration problem. Results have shown that the presence of wave-shaper increases the shaped charge depth penetration. For the standoff of 6 charge calibres, the jet penetration is found to be deepest. It is found that the jet velocity is proportional to the jet energy, and the penetration is proportional to the liner density. The oblique explosive reactive armor is more efficient for the protection of the main target. Numerical results have a good agreement with the data from available literature – with experimental results for the chosen explosives.

Keywords

ERA; HEAT; high explosive; metal liner; wave-shaper

Hrčak ID:

228512

URI

https://hrcak.srce.hr/228512

Publication date:

27.11.2019.

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