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Microstructural Behavior of Energetic Crystalline Aggregates

Published online by Cambridge University Press:  10 April 2013

D. LABARBERA  and
M.A. ZIKRY
D. LABARBERA
Affiliation:
Dept. of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695-7910
M.A. ZIKRY
Affiliation:
Dept. of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695-7910
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Abstract

A dislocation-density based crystalline plasticity and specialized finite-element formulations were used to study the behavior of energetic crystalline aggregates. The energetic crystalline material studied was RDX (cyclotrimethylene trinitramine) with a polymer binder and different void porosities. The aggregate was subjected to different dynamic pressures, and the analyses indicate that maximum temperature increases, constrained dislocation densities, and plastic strain accumulations occurred around the void peripheries, which affected overall deformation behavior. These regions of extreme temperature rise and thermal decomposition can result in hot spot formation.

Keywords

energetic materialcrystallinemicrostructure
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1526: Symposium TT – Defects and Microstructure Complexity in Materials , 2013 , mrsf12-1526-tt06-07
Copyright
Copyright © Materials Research Society 2013

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References

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