A static and dynamic analysis of the postbuckling of geometrically imperfect composite beams

Samir A. Emam

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)

Abstract

The static and dynamic response of geometrically imperfect composite beams is presented. The proposed model accounts for the midplane stretching of the beam that follows the classical beam theory and its curvature is assumed to be shallow. The assumption of a small strain, moderate deformation is used. The governing equations are nonlinear integral partial-differential equations. A unified approach is used to handle the postbuckling response of composite beams with and without imperfection. As a result, an analytical solution for the beam's static response in terms of the applied axial load, imperfection, and lay up is obtained. Moreover, the free vibrations in the postbuckling domain are investigated. Having the beam's imperfection as a control parameter, the beam's static and dynamic response is investigated and presented. Results show that the imperfection has a significant effect on the static and dynamic response of composite beams.

Original languageEnglish
Pages (from-to)247-253
Number of pages7
JournalComposite Structures
Volume90
Issue number2
DOIs
Publication statusPublished - Sep 2009

Keywords

  • Composite beams
  • Imperfection
  • Postbuckling

ASJC Scopus subject areas

  • Ceramics and Composites
  • Civil and Structural Engineering

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