Damage Evolution in Filled Elastomers

Abstract

This report summarizes accomplishments on the development of mathematical models of distributed microcracking in filled elastomers, such as solid propellant, and in other linear and nonlinear viscoelastic composite materials. The work is divided into two parts. The first part is concerned with elastic composites while the second part extends the theory to viscoelastic behavior. Experimental results and the theory for axially stretched and pressurized specimens are combined to derive three material functions of damage. The theory is then used to predict behavior under pressures not used in the development of the material functions. Good agreement between theory and experiment is shown for the strain from zero to the zero-pressure failure strain of approximately 55%.

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Document Details

Document Type
Technical Report
Publication Date
Aug 09, 1991
Accession Number
ADA240532

Entities

People

  • R. A. Schapery

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Agreements
  • Barometric Pressure
  • Composite Materials
  • Convolution Integrals
  • Cracks
  • Elastomers
  • Experimental Data
  • Integrals
  • Material Degradation Processes
  • Materials
  • Mathematical Models
  • Mechanics
  • Particle Size
  • Particles
  • Particulates
  • Propellants
  • Solid Propellants

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Theoretical Analysis.