Detonation shock dynamics for porous explosives and energetic materials

Juan A. Saenz, D. Scott Stewart

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

Abstract

An explosive powder subjected to mechanical or thermal loading undergoes micro structural changes that cause the density to increase and the material to be compacted. The energy that drives compaction is absorbed by the material as the microstructure changes and the specific internal energy of the solid-void mixture increases due to the increase in density as voids become occupied by solids. These changes affect the reactive properties of the material and the mechanics and dynamics of detonation waves in explosive powders. The effects of explosive powder compaction on detonation wave dynamics have not been well characterized. Here we use the theory of Detonation Shock Dynamics (DSD) to analyze the effects of compaction on the dynamics and geometry of detonation waves in explosive powders. We apply DSD theory using a simplified equation of state (EOS) that has been shown to represent the effects of compaction that lead to deflagration to detonation transition in explosive powders. We will show results from the numerical solution of the DSD theory equations as well as from asymptotic DSD theory.

Original languageEnglish (US)
Title of host publicationShock Compression of Condensed Matter - 2009 - Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
Pages99-102
Number of pages4
DOIs
StatePublished - 2009
EventConference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2009 APS SCCM - Nashville, TN, United States
Duration: Jun 28 2009Jul 3 2009

Publication series

NameAIP Conference Proceedings
Volume1195
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherConference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2009 APS SCCM
Country/TerritoryUnited States
CityNashville, TN
Period6/28/097/3/09

Keywords

  • Detonation : shock dynamics
  • Powder compaction

ASJC Scopus subject areas

  • General Physics and Astronomy

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