Accession Number:

ADA409445

Title:

A Microforce-Based Theory for Energetic Materials

Descriptive Note:

Abstract

Corporate Author:

ILLINOIS UNIV AT URBANA DEPT OF THEORETICAL AND APPLIED MECHANICS

Report Date:

1999-06-08

Pagination or Media Count:

3.0

Abstract:

Employing advanced tools of continuum thermomechanics, we have developed a fully three-dimensional framework, which in its most general form is able to model all the mentioned behaviors of energetic materials. The concept of microforces, forces that drive changes in material microstructure, is employed to generate consistent equations of evolution for combustion and phase transitions. The method of generating equations for thermomechanical behavior using microforces begins with the generation of a free-energy function that encompasses all the material changes. The Clausius-Duhem inequality, a statement of the second law of thermodynamics, is then applied, restricting the material behavior to be thermodynamically correct a prori. Appropriate forms of coupling behavior and dissipation functions are derived.

Subject Categories:

  • Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE