Experimental Validation of Detonation Shock Dynamics in Condensed Explosives

Abstract

Experiments in the HMX-based condensed explosive PBX-9501 were carried out to validate a reduced, asymptotically derived description of detonation shock dynamics (DSD) where it is assumed that the normal detonation shock speed is determined by the total shock curvature. The Passover experiment has a lead disk embedded in a right circular cylindrical charge of PBX-9501 and is initiated from the bottom. The subsequent detonation shock experiences a range of dynamic states with both diverging (convex) and converging (concave) configurations as the detonation shock passes over the disk. The time of arrival of the detonation shock at the top surface of the charge is recorded and compared against DSD simulation and direct multi-material simulation. A new wide-ranging equation of state (EOS) and rate law that is constrained by basic explosive characterization experiments is introduced as a constitutive description of the explosive.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2006
Accession Number
ADA456624

Entities

People

  • Bradley Wescott
  • D. Scott Stewart
  • David Lambert
  • Sunhee Yoo

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Biomedical
  • Counter IED
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Detonation Waves
  • Engineering
  • Equations
  • Euler Equations
  • Experimental Data
  • Explosives
  • Geometry
  • Hot Spots
  • Inert Materials
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Military Research
  • Plastic Bonded Explosives

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.