Development of a Stratified Plate Model for Composite Panels

Abstract

A new model for composites represents a composite panel as an alternating stack of isotropic matrix and orthotropic fiber-dominated layers. An energy approach results in a set of partial differential equations and boundary conditions where the mechanical properties of the matrix and fibers appear separately. Two solution methods are developed. The first, called Strata Theory is developed for general applications, while the second, called the Exact Stratified Plate, is used as a benchmark for comparison to Strata Theory. Both solutions assume zero gradients of displacement through the thickness of a fiber layer. They are compared for an isotropic material and a two-ply composite with cross-plies, using simply-supported cases of a square plate and cylindrical bending.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1992
Accession Number
ADA248206

Entities

People

  • Alan L. Lesmerises

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Boundaries
  • Composite Materials
  • Differential Equations
  • Displacement
  • Eigenvalues
  • Elastic Properties
  • Engineering
  • Equations
  • Materials
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Partial Differential Equations
  • Stress Strain Relations
  • Stresses
  • Three Dimensional

Readers

  • Regression Analysis.
  • Reinforced Composite Materials
  • Structural Dynamics.