An alternative method for analysing buckling of laminated composite beams

Ozkan G., Tekin Özkan G. , Kadıoğlu F.

GRADEVINAR, vol.69, no.9, pp.841-850, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 69 Issue: 9
  • Publication Date: 2017
  • Doi Number: 10.14256/jce.1665.2016
  • Title of Journal : GRADEVINAR
  • Page Numbers: pp.841-850


In this study, two new functionals are derived based on Gateaux differential in order to analyse buckling of symmetric cross-ply laminated composite straight beams. The functional comprises four independent variables, i.e. deflection, rotation, shear force and bending moment for Timoshenko beam, and two independent variables, deflection and bending moment, for Euler-Bernoulli beam. The application possibilities and performance of the proposed mixed finite element formulation are presented on several numerical examples.