Parametric studies of directed fragmentation warhead used for combat shaped charges

• Autorzy: Panowicz R. , Nowak J. , Konarzewski M. , Niezgoda T.
• Języki publikacji: EN

Abstrakty

EN

The aim of this paper is to present the results of research on the influence of fragmentation liner material parameter on spreading capabilities. A fragmentation liner is a part of a directed fragmentation warhead used to combat shaped charges and consisting of metal balls embedded in the resin. In addition, the case of the fragmentation warhead and the surrounding air were also modeled. Four variants of numerical analyses were prepared, differing in the value of maximum plastic strain characterizing the fragmentation liner. C-4 explosive was used for driving the liner fragmentation. In order to properly describe the behaviour of the fragmentation warhead, Arbitrary-Lagrangian Eulerian (ALE) and Fluid-Structure Interaction (FSI) approach was used. A three dimensional model of directed fragmentation warhead along with the fragmentation liner was prepared in MSC Patran software and numerical analyses were performed using LS-Dyna software. As a result of numerical analyses, the maximum velocity and a spreading angle in both the vertical and horizontal plane of the fragmentation liner were determined in each case.

Słowa kluczowe

EN

finite elements method; FEM; dynamic; directed fragmentation warheads

PL

metoda elementów skończonych; głowice odłamkowe

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Engineering Transactions
• Rocznik: 2015
• Tom: Vol. 63, iss. 2
• Strony: 181--190
• Opis fizyczny: Bibliogr., 5 poz., rys., tab., wykr.

Twórcy

autor

Panowicz R.

• Military Technical Academy, Faculty of Mechanical Engineering Department of Mechanics and Applied Computer Science Kaliskiego 2, 00-908 Warszawa, Poland

autor

Nowak J.

• Military Technical Academy, Faculty of Mechanical Engineering Department of Mechanics and Applied Computer Science Kaliskiego 2, 00-908 Warszawa, Poland

autor

Konarzewski M.

• Military Technical Academy, Faculty of Mechanical Engineering Department of Mechanics and Applied Computer Science Kaliskiego 2, 00-908 Warszawa, Poland

autor

Niezgoda T.

• Military Technical Academy, Faculty of Mechanical Engineering Department of Mechanics and Applied Computer Science Kaliskiego 2, 00-908 Warszawa, Poland

Bibliografia

• 1. Bdzil J.B., Stewart D.S., Jackson T.L., Program burn algorithms based on detonation shock dynamics: discrete approximations of detonation flows with discontinuous front models, J. Comput. Phys., 174, 870–902, 2001.
• 2. Panowicz R., Nowak J., Konarzewski M., Niezgoda T., Introduction to numerical analysis of directed fragmentation warheads, Journal of KONES Powertrain and Transport, 20, 4, 2013.
• 3. Hallquist J.O., Ls-Dyna theory manual, Livermore Software Technology Corporation, Livermore, 2005.
• 4. Jach K. [Eds.], Computer modeling of the dynamic interaction of bodies using the free points method, [in Polish: Komputerowe modelowanie dynamicznych oddziaływań metodą punktów swobodnych], PWN, Warszawa, 2001.
• 5. Kapila A.K., Bdzil J.B., Stewart D.S., On the structure and accuracy of programmed burn, Combustion Theory and Modelling, 10, 2, 2006.