A Model for the Thermoplastic Analysis of Metal Matrix Laminates

Abstract

This report describes the development of a theoretical model for the thermoplastic analysis of metal matrix fiber reinforced laminates. The nonlinear analysis is based on an incremental form of classical lamination theory in which the laminate can be loaded by residual stresses, thermal loads and edge stress resultants. The constituent stresses of the layers of the laminate are computed as the phase average stresses of the Composite Cylinder Assemblage. The matrix plasticity is treated by a transversely isotropic J2 theory with the exception that the response is found in an average sense since the onset of plastic flow (von Mises yield surface) and the flow itself (Prager's Rule) are based on the matrix phase average stresses. The hardening is temperature-dependent and kinematic. The mathematical model also accounts for the temperature dependency of the fiber and matrix material properties.

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Document Details

Document Type
Technical Report
Publication Date
Dec 20, 1989
Accession Number
ADA233654

Entities

People

  • David J. Barrett

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerospace Craft
  • Aerospaceplanes
  • Aircrafts
  • Airframes
  • Composite Materials
  • Coordinate Systems
  • Engineering
  • Graphitic Materials
  • Laminates
  • Materials Science
  • Mechanical Engineering
  • Mechanics
  • Metal Matrix Composites
  • Plastic Flow
  • Propulsion Systems
  • United States Naval Academy
  • Vehicles

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.