Experimental and Numerical Study on the PG-7VM Warhead Performance against High-Hardness Armor Steel
Analyses presented in the article were carried out in order to characterize the main parameters of the shaped charge jet formed due to detonation of the PG-7VM warhead. As opposed to the previously published studies in which rolled homogeneous armored steel was mainly used as a target, in the curren...
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doaj-be28b2a932d942d1afda63b0f012fd062021-06-30T23:07:16ZengMDPI AGMaterials1996-19442021-06-01143020302010.3390/ma14113020Experimental and Numerical Study on the PG-7VM Warhead Performance against High-Hardness Armor SteelPaweł Żochowski0Radosław Warchoł1Maciej Miszczak2Marcin Nita3Zygmunt Pankowski4Marcin Bajkowski5Military Institute of Armament Technology, 7 Wyszynskiego Street, 05-220 Zielonka, PolandMilitary Institute of Armament Technology, 7 Wyszynskiego Street, 05-220 Zielonka, PolandMilitary Institute of Armament Technology, 7 Wyszynskiego Street, 05-220 Zielonka, PolandMilitary Institute of Armament Technology, 7 Wyszynskiego Street, 05-220 Zielonka, PolandMilitary Institute of Armament Technology, 7 Wyszynskiego Street, 05-220 Zielonka, PolandFaculty of Production Engineering, Institute of Mechanics and Printing, Warsaw University of Technology, Narbutta 85 Street, 02-524 Warsaw, PolandAnalyses presented in the article were carried out in order to characterize the main parameters of the shaped charge jet formed due to detonation of the PG-7VM warhead. As opposed to the previously published studies in which rolled homogeneous armored steel was mainly used as a target, in the current work the warhead penetration capability was determined against more contemporary high-hardness (500 HB) ARMSTAL 30PM steel armor with precisely determined mechanical properties. The research included experimental depth of penetration tests and their numerical reproduction in the LS-Dyna software. Special attention was paid to factors that could perturbate the shaped charge jet formation process and under- or overestimate its penetration capability. For this reason, warheads were X-ray inspected for structural discrepancies (voids or air inclusions in explosive, misalignment between the body, explosive, and liner, or lack of contact between the explosive and the liner) and properties of materials (explosive, targets, and most important warhead components) were analyzed before the experiments. The numerical model of the warhead was defined more accurately than in previously published studies, since it was based on the real grenade dimensions and its technical documentation. Thanks to this, the depth of penetration of the target made of ARMSTAL 30PM armored steel plates by the shaped charge jet formed from the PG-7VM warhead obtained by numerical simulation was consistent with the experimental results and equaled 278 mm and 280 mm, respectively. The difference between the experimental and numerical value was smaller than 1%, which confirms that the developed methodology of modeling allows users to properly reproduce the PG-7VM shaped charge jet formation and target penetration processes. A verified numerical model of the shaped charge jet penetration into a steel target was used to determine depth of penetration in function of stand-off distance for the PG-7VM warhead. A maximum depth of penetration of about 317 mm was obtained for the stand-off distance of 360 mm, which may indicate the potential direction of modernization of warheads.https://www.mdpi.com/1996-1944/14/11/3020shaped chargeshaped charge jethigh-explosive anti-tank warheadPG-7 grenadehigh-hardness armored steelnumerical simulation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Paweł Żochowski Radosław Warchoł Maciej Miszczak Marcin Nita Zygmunt Pankowski Marcin Bajkowski |
spellingShingle |
Paweł Żochowski Radosław Warchoł Maciej Miszczak Marcin Nita Zygmunt Pankowski Marcin Bajkowski Experimental and Numerical Study on the PG-7VM Warhead Performance against High-Hardness Armor Steel Materials shaped charge shaped charge jet high-explosive anti-tank warhead PG-7 grenade high-hardness armored steel numerical simulation |
author_facet |
Paweł Żochowski Radosław Warchoł Maciej Miszczak Marcin Nita Zygmunt Pankowski Marcin Bajkowski |
author_sort |
Paweł Żochowski |
title |
Experimental and Numerical Study on the PG-7VM Warhead Performance against High-Hardness Armor Steel |
title_short |
Experimental and Numerical Study on the PG-7VM Warhead Performance against High-Hardness Armor Steel |
title_full |
Experimental and Numerical Study on the PG-7VM Warhead Performance against High-Hardness Armor Steel |
title_fullStr |
Experimental and Numerical Study on the PG-7VM Warhead Performance against High-Hardness Armor Steel |
title_full_unstemmed |
Experimental and Numerical Study on the PG-7VM Warhead Performance against High-Hardness Armor Steel |
title_sort |
experimental and numerical study on the pg-7vm warhead performance against high-hardness armor steel |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2021-06-01 |
description |
Analyses presented in the article were carried out in order to characterize the main parameters of the shaped charge jet formed due to detonation of the PG-7VM warhead. As opposed to the previously published studies in which rolled homogeneous armored steel was mainly used as a target, in the current work the warhead penetration capability was determined against more contemporary high-hardness (500 HB) ARMSTAL 30PM steel armor with precisely determined mechanical properties. The research included experimental depth of penetration tests and their numerical reproduction in the LS-Dyna software. Special attention was paid to factors that could perturbate the shaped charge jet formation process and under- or overestimate its penetration capability. For this reason, warheads were X-ray inspected for structural discrepancies (voids or air inclusions in explosive, misalignment between the body, explosive, and liner, or lack of contact between the explosive and the liner) and properties of materials (explosive, targets, and most important warhead components) were analyzed before the experiments. The numerical model of the warhead was defined more accurately than in previously published studies, since it was based on the real grenade dimensions and its technical documentation. Thanks to this, the depth of penetration of the target made of ARMSTAL 30PM armored steel plates by the shaped charge jet formed from the PG-7VM warhead obtained by numerical simulation was consistent with the experimental results and equaled 278 mm and 280 mm, respectively. The difference between the experimental and numerical value was smaller than 1%, which confirms that the developed methodology of modeling allows users to properly reproduce the PG-7VM shaped charge jet formation and target penetration processes. A verified numerical model of the shaped charge jet penetration into a steel target was used to determine depth of penetration in function of stand-off distance for the PG-7VM warhead. A maximum depth of penetration of about 317 mm was obtained for the stand-off distance of 360 mm, which may indicate the potential direction of modernization of warheads. |
topic |
shaped charge shaped charge jet high-explosive anti-tank warhead PG-7 grenade high-hardness armored steel numerical simulation |
url |
https://www.mdpi.com/1996-1944/14/11/3020 |
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