Accession Number:

ADA210713

Title:

Studies in Penetration Mechanics

Descriptive Note:

Final rept. 23 Sep 1985-22 Mar 1989

Corporate Author:

MISSOURI UNIV-ROLLA

Personal Author(s):

• Batra, R. C.

Report Date:

1989-06-14

Pagination or Media Count:

120.0

Abstract:

The details of a steadily growing plastic flow field a short while after a thick target has been impacted by a deformable penetrator have been studied with the ultimate objectives of identifying key material and kinematic variables that should be included in developing engineering models of target penetration. The problems studied include the axisymmetric thermomechanical deformations of a viscoplastic target being penetrated by a rigid cylindrical penetrator, and of a viscoplastic rod striking a known hemispherical rigid cavity. The effects of heat generated due to plastic deformations, compressibility of the material, work-hardening, strain-rate hardening, thermal softening, and the shape of the penetrator nose in the former case and the cavity shape for the latter problem have been investigated. Projectiles Steady state deformations Thermoviscoplasticity Shear bands Penetration Terminal ballistics.

Descriptors:

• *KINETIC ENERGY PROJECTILES
• *TERMINAL BALLISTICS
• KINEMATICS
• SHEAR PROPERTIES
• THERMOMECHANICS
• ARMOR
• STEADY STATE
• THICKNESS
• MATERIALS
• PROJECTILES
• DEFORMATION
• SHAPE
• STRAIN HARDENING
• CAVITIES
• TARGETS
• STRAIN RATE
• VARIABLES
• MECHANICS
• FLOW FIELDS
• PENETRATION
• ENGINEERING
• CYLINDRICAL BODIES
• AXISYMMETRIC
• RODS
• RIGIDITY
• HEMISPHERES
• NOSES
• PLASTIC FLOW
• COMPRESSIVE PROPERTIES
• BANDS(STRIPS)
• PLASTIC DEFORMATION

Subject Categories:

• Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE