A Damage Model for Uniaxially Reinforced Composites

Abstract

This report concerns a continuum damage model for uni-directionally reinforced composites that contain a multitude of micro cracks. Consideration is given to the coupling between mechanical and thermal effects. Damage is introduced by two symmetric, second-rank, tensor-valued internal state variables which represent the total area of open and closed micro-cracks contained within a representative material volume element. Constitutive relations are formulated from basic principles of irreversible thermodynamics and continuum mechanisms. It is shown that both mechanical compliances and thermal conductivities are affected by damage, and that the material symmetry is influenced by damage orientation. Continuum damage theory, COmposite materials, Coupled heat conduction.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1988
Accession Number
ADA203262

Entities

People

  • K. Lee
  • Y. Weitsman

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Applied Mechanics
  • Composite Materials
  • Conductivity
  • Continuum Mechanics
  • Energy
  • Failure Mode And Effect Analysis
  • Laminates
  • Materials
  • Mechanics
  • Micromechanics
  • Orientation (Direction)
  • Phase Diagrams
  • Scientific Research
  • Statistics
  • Symmetry
  • Two Dimensional

Readers

  • Reinforced Composite Materials
  • Structural Health Monitoring of Composite Structures.
  • Theoretical Analysis.