Simulations Predicting the Effects of Detonation Velocity on the Speed and Temperature of Shaped Charge Jets

Abstract

In this report, I evaluate the effects of a warheads detonation velocity on the resulting speed and thermodynamic state of shapedcharge jets using the multiphysics code, ALEGRA. Specifically, I investigate a 65-mm, bare, shaped charge jet, generated fromexplosives that feature detonation velocities ranging from 6.84 to 9.11 km/s with a fixed geometry. Data showed a general trendfor all cases: a hot axis that cools off with increasing radius according to a second-order polynomial. At higher detonationvelocities, the jet axis is predicted to be liquid. This is coincident with copper material that is faster along the axis and leads thejet tip, forming a proboscis. At slower velocities this phenomena vanishes and the jet appears to be a solid.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2020
Accession Number
AD1101026

Entities

People

  • Robert Doney

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Detonations
  • Equations
  • Equations Of State
  • Explosives
  • Geometry
  • Materials
  • Military Research
  • Polynomials
  • Shaped Charge Jets
  • Shaped Charges
  • Simulations
  • Surface Temperature
  • Terminal Ballistics
  • X Ray Flash
  • X Rays

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.