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Title: Ignition and Growth Modeling of LX-17 Hockey Puck Experiments

Abstract

Detonating solid plastic bonded explosives (PBX) formulated with the insensitive molecule triaminotrinitrobenzene (TATB) exhibit measurable reaction zone lengths, curved shock fronts, and regions of failing chemical reaction at abrupt changes in the charge geometry. A recent set of ''hockey puck'' experiments measured the breakout times of diverging detonation waves in ambient temperature LX-17 (92.5 % TATB plus 7.5% Kel-F binder) and the breakout times at the lower surfaces of 15 mm thick LX-17 discs placed below the detonator-booster plane. The LX-17 detonation waves in these discs grow outward from the initial wave leaving regions of unreacted or partially reacted TATB in the corners of these charges. This new experimental data is accurately simulated for the first time using the Ignition and Growth reactive flow model for LX-17, which is normalized to a great deal of detonation reaction zone, failure diameter and diverging detonation data. A pressure cubed dependence for the main growth of reaction rate yields excellent agreement with experiment, while a pressure squared rate diverges too quickly and a pressure quadrupled rate diverges too slowly in the LX-17 below the booster equatorial plane.

Authors:
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
15016041
Report Number(s):
UCRL-JRNL-204055
Journal ID: ISSN 0721-3115; PEPYD5; TRN: US200509%%761
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
Propellants, Explosives, Pyrotechnics
Additional Journal Information:
Journal Volume: 30; Journal Issue: 2; Other Information: Publication date is April 25, 2005; PDF-FILE: 24 ; SIZE: 0.1 MBYTES; PBD: 19 Apr 2004; Journal ID: ISSN 0721-3115
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AMBIENT TEMPERATURE; CHEMICAL REACTIONS; DETONATION WAVES; EXPLOSIONS; EXPLOSIVES; FLOW MODELS; GEOMETRY; IGNITION; KEL-F; PLASTICS; REACTION KINETICS; SIMULATION; TATB

Citation Formats

Tarver, C M. Ignition and Growth Modeling of LX-17 Hockey Puck Experiments. United States: N. p., 2004. Web. doi:10.1002/prep.200400092.
Tarver, C M. Ignition and Growth Modeling of LX-17 Hockey Puck Experiments. United States. https://doi.org/10.1002/prep.200400092
Tarver, C M. 2004. "Ignition and Growth Modeling of LX-17 Hockey Puck Experiments". United States. https://doi.org/10.1002/prep.200400092. https://www.osti.gov/servlets/purl/15016041.
@article{osti_15016041,
title = {Ignition and Growth Modeling of LX-17 Hockey Puck Experiments},
author = {Tarver, C M},
abstractNote = {Detonating solid plastic bonded explosives (PBX) formulated with the insensitive molecule triaminotrinitrobenzene (TATB) exhibit measurable reaction zone lengths, curved shock fronts, and regions of failing chemical reaction at abrupt changes in the charge geometry. A recent set of ''hockey puck'' experiments measured the breakout times of diverging detonation waves in ambient temperature LX-17 (92.5 % TATB plus 7.5% Kel-F binder) and the breakout times at the lower surfaces of 15 mm thick LX-17 discs placed below the detonator-booster plane. The LX-17 detonation waves in these discs grow outward from the initial wave leaving regions of unreacted or partially reacted TATB in the corners of these charges. This new experimental data is accurately simulated for the first time using the Ignition and Growth reactive flow model for LX-17, which is normalized to a great deal of detonation reaction zone, failure diameter and diverging detonation data. A pressure cubed dependence for the main growth of reaction rate yields excellent agreement with experiment, while a pressure squared rate diverges too quickly and a pressure quadrupled rate diverges too slowly in the LX-17 below the booster equatorial plane.},
doi = {10.1002/prep.200400092},
url = {https://www.osti.gov/biblio/15016041}, journal = {Propellants, Explosives, Pyrotechnics},
issn = {0721-3115},
number = 2,
volume = 30,
place = {United States},
year = {Mon Apr 19 00:00:00 EDT 2004},
month = {Mon Apr 19 00:00:00 EDT 2004}
}

Works referenced in this record:

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