Sub-Scaling of Projectile/Target System Damaged by Hypervelocity.

Abstract

Preliminary efforts are made to develop a methodology for analyzing the progressive failure of projectile/target systems under hypervelocity impact. Particular emphasis is placed on the thermal/mechanical interaction effects not only for evaluating the change in the local strain rates and material properties but also in finding the temperature and latent heat at which the solid may locally transform into liquid and/or gas. Such a transition can be accurately determined by the inflection points on the time dependent H-function curve that serves as a measure of the order and/or disorder of a physical system. Keywords: Hypervelocity impact, Scale models, Damage, Fracture, Finite element, Strain energy methods, Numerical analysis, Phase transformation.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1987
Accession Number
ADA188683

Entities

People

  • G. C. Sih

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Continuum Mechanics
  • Corporations
  • Energy
  • Energy Transfer
  • Equations
  • Equations Of State
  • Heat Energy
  • Heat Transfer
  • Hypervelocity Impact
  • Latent Heat
  • Mechanics
  • Numerical Analysis
  • Phase Transformations
  • Surface Energy
  • Thermodynamics
  • Transitions

Fields of Study

  • Physics

Readers

  • Explosive Engineering.
  • Materials Science and Engineering.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow