Coupling Effect in Laminated Composite Cylinder under Internal Pressure

Hisao Fukunaga, Masuji Uemura

Research output: Contribution to journalArticle

Abstract

In general, laminated cylindrical shells manufactured by filament-winding show the coupling effects and behave differently from homogeneous orthotropic ones. In the present study, such coupling effects on stress distributions in the laminated cylindrical shells were examined by use of Donnell's equation under the boundary conditions of clamped edges. The followings were obtained from the present analysis. (1) Circumferential displacements occur near the edges in the antisymmetric angle-ply laminates. (2) Twisting moments occur near the edges in the symmetric angle-ply laminates. (3) Bending moments occur in the central part of cylinder far away from both edges in the antisymmetric cross-ply laminates. These coupling effects decrease rapidly as the number of layers increases and the mechanical behaviors become close to those of homogeneous orthotropic laminates. In addition, the distributions of interlaminar shear stresses near the edges under high lateral shear force and the effects of stacking sequence and thickness ratio on them were analysed by using the finite element method because of low interlaminar shear strength in laminates. It was concluded that the interlaminar shear stresses decrease rapidly away from the clamped edges, but are considerably high near the edges especially in the case of large thickness.

Original languageEnglish
Pages (from-to)1146-1152
Number of pages7
JournalJournal of the Society of Materials Science, Japan
Volume28
Issue number315
DOIs
Publication statusPublished - 1979 Jan 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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