Blast loading on aluminum foam microstructure

• Autorzy: Miedzińska D. , Panowicz R.
• Języki publikacji: EN

Abstrakty

EN

One of the possible options as a material for protective layers is aluminum foams which become also very popular due to their lightweight and excellent plastic energy absorbing properties. Such characteristics have been appreciated by the automotive industry with continued research to further understand foam properties. Compressed foaming materials exhibit extensive plastic response, while the initial elastic region is limited in tension by a tensile brittle-failure stress. Aluminum foams have become also an attractive material as blast protective layers due to their desirable compressive properties. With different material engineering techniques (as, for example double-layer foam cladding) they can be customized to achieve the most desirable properties. Energy absorption capacity of foams microstructures under blast load was analytically confirmed based on a rigid-perfectly plastic-locking foam model Initial research indicates that energy absorbed by the cladding is much larger than that under quasi-static conditions due to strain rate effect. In this paper a numerical model of a closed cell aluminum foam idealistic microstructure was presented. The quasi static compression tests were carried out with the use of LS Dyna computer code. Then the sample was numerically loaded with the blast wavefrom detonation of explosives and its behavior was analyzed. The results ofboth analyses were compared.

Słowa kluczowe

EN

microstructure; aluminium foam; strain rate effect

• 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: 2010
• Tom: Vol. 17, No. 3
• Strony: 287--292
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Miedzińska D.

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],

Bibliografia

• [1] Hanssen, A. G., Enstock, L., Langseth, M., Close-range blast loading of aluminum foam panels, International Journal of Impact Engineering, Vol. 27, Iss. 6, pp. 593-618, 2002.
• [2] Kraynik, A. L., Linear Elastic Behaviour of Dry Soap Foams, Journal of Colloid and Interface Science, Vol. 181, pp. 511-520, 1996.
• [3] Hallquist, J. O., LS-Dyna. Theoretical manual, California Livermore Software Technology Corporation, 1998.
• [4] Le Blanc, G., Adourn, M., Lapoujade, V., External Blast Load on Structures – Empirical Approach, 5th European LS-Dyna Users Conference, UK 2005.
• [5] Mrityunjaya, R. Y., Trivikram, N. L., Vasanth, S., Ramesh, V., Simulation of Explosions in Train and Bridge Applications, 3rd ANSA & miETA International Conference, Greece 2009.
• [6] Ergonenc, C., Development and Design of Closed- Cell Aluminum Foam- Based Lightweight Sandwich Structures for Blast Protection, Doctor’s Thesis, Turkey 2008.