HELP Code Solutions to Two Test Problems in Armor Penetration

Abstract

Two test problems, each the impact of a right circular cylinder on a target plate of finite thickness, at a velocity in the ballistic range, are solved using an Eulerian computer program, HELP, for the solution of axisymmetric time-dependent flows. Test Problem Number 1 is an iron-on-iron impact and Test Problem Number 2 is an iron projectile impacting aluminum. In all cases the materials are treated as compressible and deviatoric stresses are obtained using an elastic-plastic constitutive equation. Computed results from these first two HELP problems are given in considerable detail in order that quantitative comparisons of these solutions can be made with Lagrangian calculations being performed by other research teams.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1971
Accession Number
AD0725998

Entities

People

  • J. M. Walsh
  • L. J. Hageman

Organizations

  • Utility Systems Science and Software (United States)

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Axisymmetric
  • California
  • Compression
  • Computer Programs
  • Computers
  • Constitutive Equations
  • Contracts
  • Elements
  • Equations
  • Equations Of Motion
  • Equations Of State
  • Maryland
  • Materials
  • Projectiles
  • Strain Rate
  • Symmetry

Readers

  • Computational Fluid Dynamics (CFD)
  • Explosive Engineering.
  • Mechanical Engineering/Mechanics of Materials.