Advanced Energy Absorbers Used in Blast Resistant Systems

The main aim of the presented experiments is to
improve behaviour of sandwich structures under dynamic loading,
such as crash or explosion. This paper describes experimental
investigation on the response of new advanced materials to low and
high velocity load. Blast wave energy absorbers were designed using
two types of porous lightweight raw particle materials based on
expanded glass and ceramics with dimensions of 0.5-1 mm,
combined with polymeric binder. The effect of binder amount on the
static and dynamic properties of designed materials was observed.
Prism shaped specimens were prepared and loaded to obtain physicomechanical
parameters – bulk density, compressive and flexural
strength under quasistatic load, the dynamic response was determined
using Split Hopkinson Pressure bar apparatus. Numerical
investigation of the material behaviour in sandwich structure was
performed using implicit/explicit solver LS-Dyna. As the last step,
the developed material was used as the interlayer of blast resistant
litter bin, and it´s functionality was verified by real field blast tests.

• Martina Drdlová
• Michal Frank
• Radek Řídký
• Jaroslav Buchar
• Josef Krátký

• Blast energy absorber
• SHPB
• expanded glass
• expanded ceramics.

[1] N. Gupta. and V. C. Shunmugasamy, Mater. Sci. Eng. A, vol. 528,
pp. 7596–7605, 2011.
[2] N. Gupta, V. C. Shunmugasamy, Q. Nguyen and P. G. Coelho,
Mater. Sci. Eng. A, vol. 527, pp. 6166–6177, 2010.
[3] M. Drdlova, M. Frank, J. Buchar and J. Krátký, International Science
Index, vol. 8, No. 10, 2014
[4] LS Dyna User Manual, Volume II Material models, 2012
[5] G. Slik, G. Vogel, and V. Chawda, Material model validation of a high
efficient energy absorbing foam. In Proceedings of the 5th LS-DYNA
forum, Materials Engineering Centre, Ulm, Germany.