The Effect of Thermodynamic Constraints Upon the Mie-Grüneisen Equation of State

Abstract

Hydrocodes or wave codes, as they are often called, are a common analysis tool in the terminal ballistic community and are expected to become increasingly useful as a design tool as well. These codes are used to analyze a variety of terminal ballistic phenomena which involve impact, detonation, and/or wave propagation. As such, it is vital that the numerical and material modeling formulations which make up this class of codes be on firm scientific footing. One aspect of the material modeling formulations which is very important to hydrocodes is the equation of state, which defines material pressure in terms of other thermodynamic parameters. The equation of state is one of several key material descriptors employed in hydrocodes.