Computational Model for Armor Penetration

Abstract

Results are reported from the second year of a three-year BRL/AMMRC/ SRI program to develop a computational capability for predicting the behind-the- armor fragment environment for spaced armor attacked by long-rod penetrators. The baseline materials chosen were rolled homogenous steel armor (RHA) and depleted uranium (DU) for the penetrator. Phenomenological studies involving both quarter and full-scale ballistics tests at velocities up to 1.5 km/s and obliquities from 0 to 70 clearly revealed shear banding to be the principal phenomenon controlling both penetrator erosion and armor failure. A detailed, phenomenological scenario for oblique armor penetration is given . Contained fragmenting cylinder (CFC) experiments were performed to characterize the resistance of RHA to shear banding; a significant anisotropy was observed. The SHEAR3 computational model for shear banding was refined and calibrated with respect to previously obtained data from CFC experiments using 4340 steel (Rc40) .

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1987
Accession Number
ADA190235

Entities

People

  • D. A. Shockey
  • D. C. Erlich
  • Damian Curran
  • L. Seaman
  • R. D. Caligiuri

Organizations

  • SRI International

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Armor
  • Composite Materials
  • Computational Science
  • Computer Programs
  • Computer Simulations
  • Crystal Structure
  • Data Analysis
  • Databases
  • Explosives
  • Failure Mode And Effect Analysis
  • Geometry
  • Materials
  • Materials Science
  • Mechanics
  • Military Research
  • Shear Modulus
  • Stress Strain Relations

Readers

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

Technology Areas

  • Space