Analysis of the detonation initiation point position influence on the cylindrical fragmentation warhead effectiveness

• Autorzy: Panowicz R. , Konarzewski M. , Trypolin M.

Identyfikatory

DOI

10.5604/12314005.1213585

• Języki publikacji: EN

Abstrakty

EN

The article presents results of the numerical analyses of the fragmentation warhead, which is one of the key elements of the missile used to combat anti-tank missiles. The fragmentation warhead is composed of such elements as outer casing, inner casing, explosive material and fragmentation liner. The fragmentation liner is built from steel spheres or cylinders embedded in epoxy resin. As a result of the explosive material detonation the pressure wave is generated, which affects the liner, causes its fragmentation, and drives each splinter. In order to perform numerical analyses the model of the cylindrical fragmentation warhead with a diameter of 80 millimetres and a length of 100 mm was prepared. The fragmentation liner consists of steel spheres with a diameter of 5 mm. It was assumed in simulation that the detonating material is the plastic explosive C4. The influence of the position of the explosive charge detonation initiation point of the fragmentation warhead on its effectiveness was studied. Effectiveness was evaluated by measuring the maximum speed obtained by the fragments and their spatial distribution. A three-dimensional model of the studied system has been prepared using the MSC Patran software and the numerical analyses were performed using the finite element method with explicit scheme of the time integration implemented in the LS-Dyna solver. To model gas domain Arbitrary Lagrangian-Eulerian (ALE) method was used and interaction between gas and solid body was modelled with FSI coupling.

Słowa kluczowe

EN

finite elements method; dynamics; directed fragmentation warheads

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2016
• Tom: Vol. 23, No. 1
• Strony: 263--270
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Panowicz R.

• Military University of Technology Department of Mechanics and Applied Computer Science Kaliskiego Street 2, 00-908 Warsaw, Poland tel.: [phone], fax. [phone]

autor

Konarzewski M.

• Military University of Technology Department of Mechanics and Applied Computer Science Kaliskiego Street 2, 00-908 Warsaw, Poland tel.: [phone], fax. [phone]

autor

Trypolin M.

• Military University of Technology Department of Mechanics and Applied Computer Science Kaliskiego Street 2, 00-908 Warsaw, Poland tel.: [phone], fax. [phone]

Bibliografia

• [1] Hallquist, J. O., LS-Dyna Theory Manual, Livermore Software Technology Corporation, Livermore 2005.
• [2] Kapila, A. K., Bdzil, J. B., Stewart, D. S., On the structure and accuracy of programmed burn, Combustion Theory and Modelling, Vol. 10, Is. 2, 2006.
• [3] Niezgoda, T., Panowicz, R., Sybilski, K., Model MES pocisku PG-7G: wstępna analiza numeryczna oddziaływania pocisku z przeszkodą, Mechanik, 83, 7, 2010.
• [4] Nowak, J., Panowicz, R., Konarzewski, M., Influence of destructor case type on separate of fragments in military vehicles active protection system, Journal of KONES Powertrain and Transport, Vol. 21, No. 1, pp. 183-187, 2014.
• [5] Masahiko, O., Yamato, M., Kenji, M., Yukio, K., Shigeru, I., A Study on Shock Wave Propagation Process in the Smooth Blasting Technique, 8th International LS-DYNA Conference, Detroit 2004.
• [6] Panowicz, R., Nowak, J., Konarzewski, M., Niezgoda, T., Parametric studies of directed fragmentation warhead used for combat shaped charges, Engineering Transactions, 63, 2, pp. 181-190, 2015
• [7] Włodarczyk, E., Wstęp do mechaniki wybuchu, PWN, Warsaw 1994.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.