Numerical analysis of an influence of ceramic plate surrounding by metal components in a ballistic panel

• Autorzy: Stanisławek S. , Morka A. , Niezgoda T.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a numerical study of the three layer composite panels impacted by an AP (Armor Piercing) 7.62x51mm projectile. The standard panel is built with aluminum and Al2O3 ceramic plate. The studied model, however, consists of the same aluminum plate but the ceramic one is surrounded by a steel packet. The problem has been solved with the usage of the modelling and simulation methods as well as finite elements method implemented in LS-DYNA software. Space discretization for each option was built with three dimension elements guaranteeing satisfying accuracy of the calculations. For material behaviour simulation, specific models including the influence of the strain rate and temperature changes were considered. Steel projectile and aluminum plate material were described by Johnson-Cook model and ceramic target by Johnson-Holmquist model. In the studied panels, the area surrounding back edges was supported by a rigid wall. The obtained results show interesting properties of the new structures considering their ballistic resistance. The ballistic protection of a three layer panel under the WC projectile impact is indentified. Panels containing the ceramic plate surrounded at each side by a steel packet plate are stronger. However, this difference reaches only the level of 2.4% regardless erosion parameters. Definitely technological complication and an area density mass increase cannot balance a small improvement of ballistic protection. However, this kind of panel is not suggested as a useful solution. Further investigations are suggested in order to analyze an influence of initial ceramic compression. The results of those numerical simulations can be used for designing of modern armour protection systems against hard kinetic projectiles.

Słowa kluczowe

EN

computational mechanics; ballistic protection; composite armour; ceramics

• 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: 2011
• Tom: Vol. 18, No. 4
• Strony: 471--474
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Stanisławek S.

autor

Morka A.

autor

Niezgoda T.

• Military University of Technology Gen. S. Kaliski 2 St., 00-908 Warsaw, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] Medvedovski, E. Ballistic performance of armour ceramics: Influence of design and structure, Umicore Indium Products, 50 Sims Ave., Providence, RI 02909, USA.
• [2] Gogots, G. A., Fracture toughness of ceramics and ceramic composite, Institute for Problems of Strength, 2 Timiryazevskaya Street, Kiev 01014, Ukraine.
• [3] Ls-Dyna Keyword User’s Manual, May 2010 Version 971/Rev 5.
• [4] Nilsson, M., Constitutive model for Armox 500T and Armox 600T at low and medium strain rates, Swedish Defence Research Agency, TR FOI-R-1068-SE, 2003.
• [5] Johnson, G. R., Cook, W. H., A Constitutive Model and Data for Metals Subjected to Large Strains, High Strain Rates and High Temperatures, Proceedings of the 7th International Symposium on Ballistics, The Hague, The Netherlands, April 1983.
• [6] Panov, V., Modelling of behaviour of metals at high strain rates, Cranfield University, PhD Thesis, 2005.