Post-buckling analysis of a strut with general initial imperfection

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Abstract

Computational procedure has been presented for the post-buckling analysis of a strut with initial imperfection when subjected to progressive end shortening. Polynomial expression in very general form is used to simulate the actual initial imperfection, while the deformations are expressed by suitable trigonometric series. Geometric non-linearity is introduced into the strain-displacement relations in a manner that is consistent with the von Karman assumptions. Non-linear equilibrium equations are solved by a Newton-Raphson procedure. Results are presented for cases with symmetric and non-symmetric initial imperfection. Good comparison with other solutions and experimental results is obtained in all applications.
Original languageEnglish
Pages (from-to)1017-1028
Number of pages12
JournalInternational Journal for Numerical Methods in Engineering
Volume43
Issue number6
DOIs
Publication statusPublished - 30 Nov 1998

Keywords

  • Initial imperfection
  • Post-buckling analysis
  • Strut

ASJC Scopus subject areas

  • Numerical Analysis
  • Engineering(all)
  • Applied Mathematics

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