Elastic buckling of I-beams under linear moment gradient

Nam Hyoung Lim, Nam Hoi Park, Young Jong Kang, Ik Hyun Sung

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


This paper investigates the elastic lateral-torsional buckling of I-beams under linear moment gradient that very precisely incorporates the effects of moment gradient and various end restraints. The elastic critical buckling moments are obtained independently by using: (1) the Bubnov-Galerkin method and (2) the finite element method. The present formula of the moment gradient correction factor cannot satisfactorily predict the buckling capacities of doubly symmetric and monosymmetric I-beams with various end restraints. We propose alternative equations for evaluating the moment gradient correction factor, considering end restraint conditions.

Original languageEnglish
Pages (from-to)5635-5647
Number of pages13
JournalInternational Journal of Solids and Structures
Issue number21
Publication statusPublished - 2003 Oct


  • Elastic lateral-torsional buckling
  • End restraints
  • Moment gradient correction factor

ASJC Scopus subject areas

  • Modelling and Simulation
  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics


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