Studies in Penetration Mechanics

Abstract

Steady state axisymmetric deformations of a thick thermoviscoplastic target being penetrated by a cylindrical penetrator also made of a thermoviscoplastic material have been studied. The materials of the target and the penetrator have been assumed to exhibit strain-rate hardening and thermal softening. In the second set of studies, the penetrator has been taken to be rigid, and the effect of friction at the target/penetrator interface, elasticity of the target material, and different flow rules used to model the target material have been analyzed. An engineering model capable of analyzing deformations of a viscoplastic target being penetrated by a rigid cylindrical rod has been developed. Various predictions from the model are found to match well with those from the finite element solution of the problem.... Steady state penetration, Axisymmetric deformations, Material elasticity, Frictional force.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1992
Accession Number
ADA260436

Entities

People

  • Romesh C. Barta

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Value Problems
  • Computational Fluid Dynamics
  • Computational Science
  • Convection
  • Differential Equations
  • Elastic Properties
  • Engineering
  • Finite Element Analysis
  • Fluid Flow
  • Heat Transfer
  • Materials
  • Mechanical Working
  • Mechanics
  • Plastic Properties
  • Steady State
  • Strain Rate
  • Two Dimensional

Fields of Study

  • Engineering
  • Physics

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • ballistics.