Numerical analysis of ceramic-steel-composite shield subjected to ballistic impact of the fragment

• Autorzy: Kosiuczenko K. , Niezgoda T. , Barnat W. , Panowicz R.
• Języki publikacji: EN

Abstrakty

EN

The issue of missile impact resistance is discussed in detail in many articles and standard papers dealing with body armour. The experience from many armed conflicts, however, may be proof that the real risks are related to a greater degree to fragments than those of bullets. It can be shown that the more often the object is destroyed as a result high-velocity impact of fragments. The paper describes the results of numerical simulations of 22 calibre bullet shrapnel piercing multilayer ballistic shield. The shield was made of ceramics, steel and composite materials. The shape of the fragment is based on the American the defence standard MIL-DTL-46593B. The fragment tested is made through the process of cold rolling steel 4337H or 4340H characterized by hardness of about 30 units on the Rockwell scale. The mass of the fragment is 17 grains (1.14 g). The ballistic shield, that was hit by fragmentation, was a rectangular plate made of a Kevlar composite and, in another variant, an epoxy composite. The test was conducted in accordance with the terms of ballistic fragmentation resistance test V50 contained in standard MIL-STD-662F. In undertaking the simulation was used the Finite Element Method (FEM) which is implemented in LS-Dyna programme. The numerical calculations were performed in the explicit option on a multiprocessor computational cluster. The necessary information to build a model like materials’ properties is taken from extensive literature. The numerical simulation resulted in, inter alia, maps and diagrams of stress, strain and energy, which were treated to further detailed analysis. On this basis of an evaluation was carried out and correction made to the FEA model. The resulting model has enabled an observation of the penetration of the ballistic shield and the ballistic behaviour of the fragment when it contacts with obstacle. These observations are essential in the design of modern protective structures and undertaking research without incurring excessive financial costs generated by laboratory experiments.

Słowa kluczowe

EN

ballistics; ceramics; composite; fragment; multilayer; simulation

• 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. 1
• Strony: 295--300
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Kosiuczenko K.

autor

Niezgoda T.

autor

Barnat W.

autor

Panowicz R.

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

Bibliografia

• [1] Collective work, MIL-STD-662F V50 Ballistic Test for Armor 1987.
• [2] Collective work, NIJ Standard – 0101.03 Bullet resistance of personal body armor, National Institute of Justice 1987.
• [3] Collective work, NIJ Standard – 0101.04 Bullet resistance of personal body armor, National Institute of Justice, 1987.
• [4] Collective work, PN-V-87000 Os􀃡ony balistyczne lekkie. Kamizelki kulo- i odłamkoodporne. Wymagania ogólne i badania, PKN, Warszawa 1999.
• [5] Collective work, MIL-DTL-46593B (MR), Department of Defense USA 2006.
• [6] Collective work, LS-DYNA Keywords User’s Manual, Livermore, Livermore Corp., 2007.
• [7] Collective work,: LS-DYNA Theory Manual, Livermore, Livermore Corp.,2006.
• [8] Bazle, A. G., Xiao, J. R., Experimental and Numerical Investigations on Damage and Delamination in Thick Plain Weave S-2 Glass Composites Under Quasi-Static Punch Shear Loading, Center for Composite Materials University of Delaware, Newark 2004.
• [9] Thama, C., Tan, V., Lee, H., Ballistic impact of a KEVLARs helmet: Experiment and simulations, International Journal of Impact Engineering (2008)5, pp.304-318, Singapore 2008.
• [10] Collective work, User’s manual for Ls-Dyna Mat162 unidirectional and plain weave composite progressive failure models., Center for Composite Materials University of Delaware, Newark 2005.
• [11] Cronin, S., Bui, K., Kaufmann, C., McIntosh, C., Berstat, T., Implementation and Validation of the Johnson-Holmquist Ceramic Material Model in LS-Dyna, 4th European LS-Dyna Users Conference, Waterloo 2008.