An Analysis of Impact Initiation of Explosives and the Currently Used Threshold Criteria

Abstract

This work ties together published experimental and theoretical results concerning the threshold condition for initiation of explosives during impact and/or penetration by projectiles or shaped charge jets. The shape of a projectile's tip, which may effect either pressure (if pointed) or duration (if rounded), has well known strong effects on the threshold velocity. A qualitative analysis is incorporated which satisfactorily relates these effects to results obtained with flat nosed rod impacts. Further, evidence is presented that even shaped charge jets display a significant nose shape effect, which adds complication to evaluating the response of explosives to jets. There is a strong, convincing evidence that for each impactor (effective) diameter, a certain threshold pressure is required for initiation. However, some (nominally) conflicting data exist and are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1990
Accession Number
ADA230187

Entities

People

  • Barry D. Fishburn

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Ammunition
  • Arm Bones
  • Bow Shock
  • Classification
  • Computer Simulations
  • Energetic Materials
  • Engineering
  • Equations
  • Explosives
  • Flow
  • Flow Fields
  • Munitions
  • Petn
  • Projectiles
  • Shaped Charge Jets
  • Shaped Charges
  • Stagnation Pressure

Fields of Study

  • Physics

Readers

  • Explosive Engineering.
  • Fluid Mechanics and Fluid Dynamics.
  • Systems Analysis and Design