ORTHOTROPIC ANALYSIS OF TUBULAR STRUCTURE.

Abstract

An analysis of thick tubular structures fabricated from layered composite materials is presented in this report. The displacement, strain, and stress fields in the tubular structure due to external or internal loads are predicated in order to provide the necessary information to determine an optimum design for the structure. Specifically the analysis applies to an inhomogeneous thick-wall orthotropic tube of finite length. The three-dimensional equations of the linear theory of elasticity are solved by the application of the Ritz method. Experimental results, obtained from testing inhomogeneous thick-wall tubes made of glass reinforced plastics, showed good agreement with the analytical results. This appears to be the first time that the problem presented by a three-dimensional, thick-wall orthotropic tube has been solved. It was found that the orthotropic characteristics were changing through the wall thickness. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1967
Accession Number
AD0682707

Entities

People

  • Juan Haener
  • Noel Ashbaugh

Tags

DTIC Thesaurus Topics

  • Composite Materials
  • Fiber Reinforced Composites
  • Fiber Reinforced Polymers
  • Glass Fiber Reinforced Plastics
  • Materials
  • Plastics
  • Polymer Matrix Composites
  • Reinforced Plastics
  • Thick Walls
  • Three Dimensional
  • Tubes
  • Tubular Structures
  • Walls

Fields of Study

  • Engineering
  • Physics

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Dynamics.