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A Systematic Method to Determine and Test the Ignition and Growth Reactive Flow Model Parameters of a Newly Designed Polymer‐Bonded Explosive
Author(s) -
Li Xiao,
Sun Yi,
Zhao Hongda,
Xiao Youcai,
Cai Xuanming,
Zhang Qiuhua,
Zhang Wei
Publication year - 2018
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.201800104
Subject(s) - explosive material , ignition system , materials science , detonation , shock (circulatory) , mechanics , superposition principle , shock wave , flow (mathematics) , cylinder , reactive material , composite material , thermodynamics , chemistry , mechanical engineering , physics , engineering , medicine , organic chemistry , quantum mechanics
In this paper, a systematic method to determine and test the ignition and growth reactive flow model parameters of a new energetic material PBX 1314 (60 weight % RDX, 16 weight % aluminum and 24 weight % HTPB) is presented. Cylinder test and shock initiation experiments are performed to study the shock initiation property of the explosive. Ignition and growth parameters are determined based on the experimental data. Test of the obtained parameters is performed by the comparison of the reaction fraction in the impact initiation and energy release experiments and the corresponding numerical simulations. The simulation results reveal that the proceeding of reaction and energy release are unsteady and inhomogeneous. Pressure decline quenches the reaction in the impact layer of the specimen although the impact pressure is more than 7 GPa. Wave reflection and superposition strengthen the pressure in the top of the specimen and triggers detonation.