Penetration of Armour by High Velocity Projectiles and Munroe Jets

Abstract

Following a method due to Bethe, it is shown that the hydrostatic pressure Po necessary to enlarge a long cylindrical hole in a ductile material, which does not show strain hardening, is about 3.5Y where Y is the yield stress. A method for taking strain-hardening into account is given; for armour this increases Po by 8 per cent., for mild steel by about 30 per cent. The plastic region extends in steel to a distance of about twelve times the radius of the hole.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 30, 1944
Accession Number
AD1009960

Entities

People

  • D. C. Pack
  • N. F. Mott
  • Raymond R. Hill

Tags

Communities of Interest

  • C4I
  • Weapons Technologies

DTIC Thesaurus Topics

  • Armor
  • Armor Plate
  • Boundaries
  • Elastic Waves
  • Errors
  • Hardening
  • Hydrostatic Pressure
  • Jet Flow
  • Materials
  • Projectiles
  • Scientific Research
  • Shaped Charges
  • Strain Hardening
  • Stress Strain Relations
  • Stresses
  • Tungsten Carbides

Readers

  • Explosive Engineering.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Structural Dynamics.