Accession Number:

ADA158081

Title:

Steady State Penetration of Rigid Perfectly Plastic Targets.

Descriptive Note:

Technical rept.,

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1985-05-01

Pagination or Media Count:

38.0

Abstract:

In this paper a detailed numerical solution to an idealized penetration problem is presented in an attempt to shed some light on these matters. The problem of steady penetration by a semi-infinite, rigid penetrator into an infinite, rigidperfectly plastic target has been studied. The rod is assumed to be cylindrical, with a hemispherical nose, and the target is assumed to obey the Von Mises yield criterion with the associated flow rule. Contact between target and penetrator has been assumed to be smooth and frictionless. Results computed and presented graphically include the velocity field in the target, the tangential velocity of target particles on the penetrator nose, normal pressure over the penetrator nose, and the dependence of the axial resisting force on penetrator speed and target strength. The kinematics and stress fields found in this paper should prove useful in devising or checking the results from simpler engineering theories of penetration.

Subject Categories:

  • Theoretical Mathematics
  • Ballistics
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE