Modeling Close-In Airblast from ANFO Cylindrical and Box-Shaped Charges

Abstract

Personnel of the U. S. Army Engineer Research and Development Center recently investigated close-in airblast (250 MPa to 600 MPa peak reflected pressures) through a series of experiments and numerical simulations. Cylindrical and box-shaped charges of ammonium nitrate with fuel oil (ANFO) were detonated at various heights above a heavy steel plate. The plate was instrumented with twelve PCB piezoelectric pressure sensors with a maximum range of 827 MPa (120 ksi). Eight additional HKS piezoresistive pressure gages were placed on two radials on the ground beyond the plate. This paper describes the experimental program and its results, accompanying calculations with a hydrodynamics code, and development of the engineering-level code CAB (Close-in Airblast) for calculation of the reflected pressures.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2010
Accession Number
ADA560518

Entities

People

  • Bob Britt
  • Bob Walker
  • Dave Hyde
  • Tyler Oesch
  • Will Mcmahon

Organizations

  • Engineer Research and Development Center

Tags

Communities of Interest

  • Counter IED

DTIC Thesaurus Topics

  • Computational Fluid Dynamics
  • Energetic Materials
  • Engineering
  • Explosions
  • Explosive Charges
  • Explosive Devices
  • Explosives
  • Fluid Dynamics
  • Fuels
  • Gages
  • Materials
  • Measurement
  • Plastic Explosives
  • Pressure Distribution
  • Pressure Gages
  • Pressure Measurement
  • Shaped Charges

Fields of Study

  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Explosive Engineering.