Studies in Penetration Mechanics

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.

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Document Details

Document Type
Technical Report
Publication Date
Jun 14, 1989
Accession Number
ADA210713

Entities

People

  • R. C. Batra

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Compressive Properties
  • Computational Science
  • Engineering
  • Failure Mode And Effect Analysis
  • Flow
  • Flow Fields
  • Hardening
  • Heat Transfer
  • Materials
  • Mechanical Properties
  • Mechanics
  • Plastic Deformation
  • Plastic Flow
  • Plastic Properties
  • Shear Bands
  • Stress Strain Relations
  • Thermal Conductivity

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Materials Science (Mechanical Engineering).
  • Pavement Materials Engineering.