ELASTIC MODULI OF COMPOSITE MATERIALS REINFORCED WITH ORTHOTROPIC FILAMENTS.

Abstract

Approximate equations for determining the elastic constants of a unidirectional composite material reinforced with an orthotropic filament are derived. In particular, equations are developed for longitudinal modulus, transverse modulus, Poisson's ratio, and shear modulus. Filament and matrix elastic constants and fiber volume percent are the necessary parameters for determining these constants. Classical theory of elasticity is applied to a composite unit cell resulting in closed form solutions. Airy stress functions are applied to the fiber and matrix with boundary conditions requiring continuity of displacements across the fiber-matrix interface (perfect bonding is assumed) and continuity of appropriate stresses. Graphical results are shown for transverse modulus and shear modulus. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1966
Accession Number
AD0630251

Entities

People

  • James M. Whitney

Organizations

  • Air Force Research Laboratory

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Composite Materials
  • Continuity
  • Displacement
  • Elastic Properties
  • Equations
  • Filaments
  • Materials
  • Shear Modulus
  • Transverse
  • Unidirectional

Readers

  • Control Systems Engineering.
  • Materials Science and Engineering.
  • Reinforced Composite Materials