Blast Pressure from Sequential Explosions

Abstract

This report describes a study of the air blast produced by sequentially detonated high explosive charges. Criteria are established relating the coalescence of successive blast waves to explosion time delay, charge weight, and distance from the explosion site. A finite-difference technique based on the method of characteristics was used to determine numerically the pressure fields produced by spherical charges with various time delays between successive detonations. Small-scale experiments were conducted with hemispherical explosive charges totaling 2 lb in weight detonated on a rigid surface. Transient pressures were observed at six stations on each of two gage lines. Comparisons are made between the peak pressures and pulse separations predicted numerically and those obtained experimentally. The results are useful in developing recommendations for siting of structures adjacent to multiple-unit explosive stores.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1969
Accession Number
AD0861625

Entities

People

  • Thomas A. Zaker

Organizations

  • IIT Research Institute

Tags

Communities of Interest

  • Counter IED
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Signals
  • Blast Waves
  • Computational Science
  • Computer Programming
  • Computer Programs
  • Computers
  • Detonations
  • Differential Equations
  • Explosions
  • Explosive Charges
  • Explosives
  • Insensitive Explosives
  • Materials
  • Method Of Characteristics
  • Plastic Explosives
  • Pressure Measurement
  • Pressure Transducers

Readers

  • Explosive Engineering.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)