Modeling ignition of HMX with the Gibbs formulation

Kibaek Lee, D. Scott Stewart

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We present a model for the ignition of HMX that uses the Gibbs formulation, in which the stress tensor and temperature are assumed to be in local equilibrium, but phase and chemical changes are not. We assume multi-components for HMX, that includes beta and delta solid phases, a liquid phase, and reactant and gas products. An isotropic, thermoelastic, small-strain model is used for the solids, a modified Fried-Howard equation of state (EOS) is used for the liquid, and the ideal gas EOS is used for the gas components. Phase and chemical changes are characterized as reactions that require the specification of the rates of change. We describe an ignition event that heats one end of the HMX slab. The subsequent sequence of events includes phase change, melting and the generation of gas reactants that burn to gas products. The one-dimensional profiles and histories of the density, stress, strain, displacement, mass fractions, and temperature of the mixture are computed.

Original languageEnglish (US)
Title of host publicationShock Compression of Condensed Matter - 2017
Subtitle of host publicationProceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
EditorsMarcus D. Knudson, Eric N. Brown, Ricky Chau, Timothy C. Germann, J. Matthew D. Lane, Jon H. Eggert
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735416932
StatePublished - Jul 3 2018
Event20th Biennial American Physical Society Conference on Shock Compression of Condensed Matter, SCCM 2017 - St. Louis, United States
Duration: Jul 9 2017Jul 14 2017

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other20th Biennial American Physical Society Conference on Shock Compression of Condensed Matter, SCCM 2017
Country/TerritoryUnited States
CitySt. Louis

ASJC Scopus subject areas

  • General Physics and Astronomy


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