Elastic local buckling of perforated webs of steel cellular beamcolumn elements

Amr M.I. Sweedan, Khaled M. El-Sawy

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


In this study, the finite element method is employed to determine the critical in-plane longitudinal load at which elastic local buckling of the web of cellular beamcolumn elements occurs. To simplify the simulation of the problem, the interaction between the flanges and perforated web is approximated by modelling the web only as a long plate having aspect ratio (L hw<10) with multiple circular perforations. The utilized model incorporates restrained out-of-plane displacements along the four edges of the plate. Analyzed plates are subjected to linearly varying in-plane loads to simulate various combinations of axial and flexural stresses. The effect of different geometrical parameters on the elastic buckling load of perforated web plate is investigated. These geometrical parameters include the plate's length and width, and the perforations' diameter and spacing. Comprehensive finite element analyses are conducted to identify the behaviour of wide spectrum of perforated web plates at buckling under various combinations of axial compressive load and bending moment. Outcomes of the study are expected to enhance the understanding of the elastic local buckling of web plates of cellular beamcolumn elements.

Original languageEnglish
Pages (from-to)1115-1127
Number of pages13
JournalJournal of Constructional Steel Research
Issue number7
Publication statusPublished - Jul 2011


  • Cellular
  • Elastic local buckling
  • Finite element method
  • Perforated web
  • Steel

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Metals and Alloys


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