Numerical analyses of the V-shaped deflector effectiveness

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

Identyfikatory

DOI

10.5604/12314005.1213602

• Języki publikacji: EN

Abstrakty

EN

One of the most effective ways to protect mobile objects from the effects of the pressure wave originating from the detonation of a landmine or an explosive charge is to use a special design of the bottom of the protected vehicle. Such structure, called the deflector, in most cases has the shape of the V letter. Article presents the study of effectiveness of the V-shaped deflector. Authors prepared numerical model of a ballistic pendulum consisting of the 1 meter long HEB220 H-beam, suspended using four parallel steel ropes. In the front part of the beam, deflector was mounted. The test component was loaded with pressure wave coming from the detonation of an explosive charge. The article presents an analysis of the ability of the deflector to disperse and/or absorption of energy, depending on the type of the used explosive material and its mass. Studies have been done on the basis of numerical analysis performed with use of the finite element method with explicit integration over time scheme, implemented in the LS-Dyna software. For generation of the pressure wave originating from the detonation of explosive charge ConWep algorithm was used. It uses the predefined by the user geometric and mass parameters, and TNT equivalent to the generation of a pressure pulses.

Słowa kluczowe

EN

ballistic pendulum; dynamics; finite element method; ConWep

• 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. 2
• Strony: 269--274
• Opis fizyczny: Bibliogr. 8 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] 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, Journal of Computational Physics, 174, pp. 870-902, 2001.
• [2] Chung Kim Yuen, S., Langdon, G. S., Nurick, G. N, Pickering, E. G., Balden, V. H., Response of V-shape plates to localised blast load: Experiments and numerical simulation, International Journal of Impact Engineering, 46, 2012.
• [3] Hallquist, J. O., LS-Dyna Theory Manual, Livermore Software Technology Corporation, Livermore 2005.
• [4] Kakogiannis, D., et al., Assessment of pressure waves generated by explosive loading, CMES, Computer Modeling in Engineering and Sciences, 65, 1, pp. 75-93, 2010.
• [5] Panowicz, R., Konarzewski, M., Wstępna analiza klasycznego stanowiska do pomiarów skutków oddziaływania fali detonacyjnej, Modelowanie Inżynierskie, 25, 56, Gliwice 2015.
• [6] Panowicz, R., Konarzewski, M., Numerical analysis of the influence of the deflector stiffness and geometry on its effectiveness, Journal of KONES Powertrain and Transport, 2, 3, 2015.
• [7] Panowicz, R., Nowak, J., Konarzewski, M., Niezgoda, T., Introduction to numerical analysis of directed fragmentation warheads, Journal of KONES Powertrain and Transport, Vol. 20, No. 4, 2013.
• [8] Remennikov, A. M., A review of methods for predicting bomb blast effects on buildings, Journal of Battlefield Technology, Vol. 4 (2), 2003.

Uwagi

PL

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