Numerical analyses of ceramic/metal ballistic panels subjected to projectile impact

• Autorzy: Morka A. , Nowak J.
• Języki publikacji: EN

Abstrakty

EN

The paper concerns research and development on modern, ceramic-based, protective layers used in the armour of tanks, combat vehicles and aeroplanes. A task of ceramic panels is reduction and dispersion of localized kinetic energy before a projectile or its fragment approaches the interior of protected object. The numerical investigations have been performed to determine the ballistic resistance of ceramic/metal panels subjected to projectile impact. The impact of the 7.62mm armour-piercing projectile on the ceramic elements backed by a metal plate was analyzed. The tested panels were composed of a ceramic layer (Al2O3, SiC or B4C) and a metal layer (7017 aluminium alloy, Armox 500T steel or Ti6Al-4 titanium alloy). Different shapes of ceramic elements were analyzed, including hemispheres and pyramids, with respect to standard flat tiles. The influence of the impact point location was also taken into considerations. The computer simulations were performed with the Finite Element Method implemented in LS-DYNA code. Full 3D models of the projectile and targets were developed with strain rate and temperature dependent material constitutive relations. The conclusions presented in the paper can be applied to develop modern impact protection panels in which the appropriate balance between the mass and protection level must be accomplished.

Słowa kluczowe

EN

computational mechanics; impact problem; armour perforation; ballistic resistance; ceramic armour

• 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: 2012
• Tom: Vol. 19, No. 4
• Strony: 465--472
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Morka A.

autor

Nowak J.

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

Bibliografia

• [1] Belytschko, T., Lu, Y.Y., Gu., L., Element free Galerkin methods, International Journal for Numerical Methods in Engineering, pp. 229-256, 1994.
• [2] Hallquist, J. O., LS-DYNA Theory Manual, Livermore Software Technology Corporation (LSTC), March 2006.
• [3] Holmquist, T. J., Templeton, D. W., Bishnoi, K. D., Constitutive modeling of aluminium nitride for large strain, high-strain rate, and high –pressure applications, International Journal of Impact Engineering, Vol. 25, pp. 211-231, Minneapolis 2001.
• [4] Jaśkowiec, J., Integracja metody elementów skończonych z bezelementową metodą Galerkina, Proceedings of the XIII Scientific conference on numerical methods, Korbielów 2001.
• [5] Kambur, C., Assessment of Mesh-free Methods in LS-DYNA: Modeling of Barriers in Crash Simulation, Master of Science Thesis, Institute for Structural Mechanics, Stuttgart 2004.
• [6] Lee, M., Yoo, Y. H., Analysis of ceramic/metal armour systems, International Journal of Impact Engineering, Vol.25, pp. 819-829, Seoul 2001.
• [7] LS-DYNA Keyword User’s Manual, version 971, Livermore Software Technology Corporation (LSTC), May 2007.
• [8] Madhua, V., Ramanjaneyulua, K., Bhata, T.B., Gupta, N.K., An experimental study of penetration resistance of ceramic armour subjected to projectile impact, International Journal of Impact Engineering 32, pp. 337–350, 2005.
• [9] Park, M., Yoo, J., Chung, D.T., An optimization of a multi-layered plate under ballistic impact, International Journal of Solids and Structures, Vol.42, pp. 123-137, Seoul 2004.
• [10] Wiśniewski, A., Pancerze budowa, projektowanie i badanie, Wydawnictwo Naukowo- Techniczne, Warszawa 2001.