Accession Number:

AD1009960

Title:

Penetration of Armour by High Velocity Projectiles and Munroe Jets

Descriptive Note:

Technical Report

Corporate Author:

Ministry of Supply London United Kingdom

Personal Author(s):

Report Date:

1944-03-30

Pagination or Media Count:

26.0

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.

Subject Categories:

  • Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE