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Rudarsko-geološko-naftni zbornik, Vol. 37 No. 2, 2022.

Original scientific paper

https://doi.org/10.17794/rgn.2022.2.7

THE EFFICIENCY OF A SMALL SIZED HAND-MADE SHAPED CHARGE

Vječislav Bohanek ; University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering Pierottijeva 6, HR-10000 Zagreb
Mario Dobrilović ; University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering Pierottijeva 6, HR-10000 Zagreb
Barbara Štimac ; University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering Pierottijeva 6, HR-10000 Zagreb
Siniša Stanković ; University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering Pierottijeva 6, HR-10000 Zagreb

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Abstract

Shaped charges are widely used in many different fields. The two main users of shaped charges are the military, where shaped charges are used as a weapon against armoured targets, and the oil industry, to perforate wells. Very often, shaped charges are the subject of scientific research focused on optimising shaped charge parameters and increasing the efficiency of shaped charges. Considering a significant number of parameters affecting the penetration depth, the optimization of shaped charge parameters is a complex process. This paper describes research on the efficiency of small handmade shaped charges. In this research, two methods are used, the first one involves simulations with numerical software and the second one is site testing. AUTODYN software was used for the numerical simulations. One of the simulations was focused on the shape and velocity of the shaped charge jet and the second on the penetration of the jet into the target material. On-site efficiency of shaped charges at different standoff distances was tested. The experimental result was compared with the AUTODYN simulation result for hand-made shaped charges placed at a distance of 90 mm from the target material. The results of the simulations agree very well with the results of the site tests. Some advantages and disadvantages of each approach are also observed.

Keywords

shaped charges; explosives; metal; jet; penetration; AUTODYN

Hrčak ID:

273878

URI

https://hrcak.srce.hr/273878

Publication date:

15.3.2022.

Article data in other languages: croatian

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