Lateral-torsional buckling of composite beams

Ákos Sapkás, László P. Kollár

Research output: Contribution to journalArticle

70 Citations (Scopus)


This paper presents the stability analysis of simply supported and cantilever, thin walled, open section, orthotropic composite beams subjected to concentrated end moments, concentrated forces, or uniformly distributed load. In the analysis, both the transverse shear and the restrained warping induced shear deformations are taken into account. An explicit expression is derived for the lateral-torsional buckling load of composite beams. A simple expression is also presented, which shows the approximate reduction in the buckling load due to shear deformation. It enables us to decide whether the effect of shear deformation is negligible.

Original languageEnglish
Pages (from-to)2939-2963
Number of pages25
JournalInternational Journal of Solids and Structures
Issue number11
Publication statusPublished - Jun 14 2002


  • Composite
  • Fiber reinforced plastics
  • Lateral-torsional buckling
  • Shear deformation

ASJC Scopus subject areas

  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

Fingerprint Dive into the research topics of 'Lateral-torsional buckling of composite beams'. Together they form a unique fingerprint.

  • Cite this