An Equation of State for Metals.

Abstract

A new analytical equation of state is offered for metals. The form is expressible completely in terms of the maximum lattice vibration frequency, macroscopically expressible as the characteristic temperature, theta, and its derivatives. For one particularly useful special case, the results have been found to match both cold-curve and shock-Hugoniot data for a variety of metals. The equation is of the Gruneisen variety, in which the Gruneisen parameter is specified as a function of volume only. The equation begins to lose accuracy in the pressure range of one to several megabars, perhaps because of the breakdown of the Gruneisen assumption, whereupon the Gruneisen parameter becomes energy dependent.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1996
Accession Number
ADA320691

Entities

People

  • Steven B. Segletes

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Bulk Modulus
  • Crystal Lattice Vibrations
  • Crystal Lattices
  • Engineering
  • Equations
  • Frequency
  • Geography
  • High Pressure
  • Isotherms
  • Jet Propulsion
  • Mechanical Engineering
  • Mechanics
  • Military Research
  • Planetary Sciences
  • Space Sciences
  • Specific Heat
  • United Kingdom

Readers

  • Calculus or Mathematical Analysis
  • Combustion Dynamics and Shock Wave Physics.
  • Pulsed Power and Plasma Physics.