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Void Collapse in Shocked β ‐HMX Single Crystals: Simulations and Experiments
Author(s) -
Duarte Camilo A.,
Hamed Ahmed,
Drake Jonathan D.,
Sorensen Christian J.,
Son Steven F.,
Chen Weyg W.,
Koslowski Marisol
Publication year - 2020
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201900251
Subject(s) - void (composites) , materials science , crystal plasticity , mechanics , energetic material , single crystal , shock (circulatory) , the void , shock wave , plasticity , composite material , crystallography , physics , chemistry , medicine , organic chemistry , quantum mechanics , explosive material
Heat generation in the vicinity of a void during shock compression plays a key role in the initiation of energetic materials. The shock response of a single β ‐HMX crystal with a single void is studied with simulations that include plasticity and heat transport. The numerical results are validated with an experiment in which a 500 μ m void is machined in an HMX single crystal and impacted. Experiments and simulations of the dynamical evolution of the morphology of the void during the collapse and the rate of the area are in very good agreement for weak shocks.