Thermal behavior of elastic columns with second-mode imperfections

Jianguo Cai, Yangqing Liu, Jian Feng, Yixiang Xu

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)
34 Downloads (Pure)


Pin-ended columns having an initial imperfection in a second buckling mode and subjected to thermal loading have been studied in this paper. Based on a nonlinear relationship between strains and displacements, the buckling equilibrium equations are given with the energy method. Then the formulae for the axial compression and transversal displacement are presented. The relationship between the anti-symmetric imperfection and the axial compression has been studied along with the effect of elevated temperature on the initial imperfection. The response of the column in fire to the modified slenderness ratio is investigated. The proposed method has the potential to provide more detailed information for column designs and thus be deployed in future research to minimize the need for expensive laboratory testing.

Original languageEnglish
Pages (from-to)16-19
Number of pages4
JournalMechanics Research Communications
Early online date14 Dec 2015
Publication statusPublished - 1 Jan 2016


  • buckling
  • columns
  • imperfections
  • steel
  • thermal loading
  • axial compression
  • elevated temperature


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