Nonlinear Constitutive Equations for Solid Propellant Based on a Work Potential and Micromechanical Model,

Abstract

The essential features of a recently developed theory for elastic composites with a changing microstructure, such as microcracking, are reviewed. This formulation, which is based on potentials like strain energy, is then illustrated by mathematically characterizing the deformation behavior of solid propellant under axial straining and confining pressure. A micromechanical model which accounts explicitly for effects of microcracking on overall deformation behavior is described next. Results from this model are combined with the potential theory to predict behavior in a constrained simple shearing experiment. Keywords: Elastomers, Composite materials.

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1987
Accession Number
ADA178624

Entities

People

  • R. A. Schapery

Organizations

  • Texas A&M University

Tags

DTIC Thesaurus Topics

  • Composite Materials
  • Constitutive Equations
  • Elastomers
  • Equations
  • Material Degradation Processes
  • Materials
  • Microcracking
  • Potential Theory
  • Propellants
  • Solid Propellants

Readers

  • Computational Modeling and Simulation
  • Mechanical Engineering/Mechanics of Materials.