A Nonlinear Three-Dimensional Micromechanics Model for Fiber-Reinforced Laminated Composites

Abstract

In this study, a three-dimensional micromechanics model is developed. The present capabilities of the model include both unidirectional and laminated composite layups with various types of nonlinear analysis such as a thermoelastic-plastic analysis employing the Prandtl-Reuss flow relations, a thermoviscoplastic analysis using Bodner-Partom unified constitutive theory, and an interfacial damage progression scheme based on a statistical interfacial failure criteria. Such nonlinearities are critical factors during thermomechanical fatigue (TMF) loading of high temperature composites. Solutions were obtained and extensive comparisons performed with existing micromechanics models, finite element analysis, and experiment with excellent results. In addition, the analysis was developed to require minimal computer resources. For instance, the majority of problems may be accomplished on a personal computer in a matter of seconds.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1993
Accession Number
ADA273772

Entities

People

  • David D. Robertson

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Composite Materials
  • Computer Programs
  • Computers
  • Creep
  • Elastic Properties
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • High Temperature
  • Laminates
  • Mechanical Properties
  • Mechanics
  • Metal Matrix Composites
  • Micromechanics
  • Plastic Properties
  • Shear Modulus
  • Stress Strain Relations
  • Three Dimensional

Readers

  • Computational Modeling and Simulation
  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.