Non-iterative moment capacities of complex composite beams using Fourier series

Airil Y. Mohd Yassin*, David A. Nethercot

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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A generic procedure is formulated for the determination of the moment capacity of composite beams having a complex cross-section. The key feature is the use of Fourier series to convert the piecewise functions of the cross-sectional stress distribution into a single-rule function. This eliminates the need for several capacity expressions to cover different stress stages, since the procedure permits the use of the general moment capacity expression. It also eliminates any iteration process when determining the location of the neutral axis since equilibrium of the cross-section can be satisfied explicitly. Numerical examples are given to demonstrate the validation and the applications of the formulation.

Original languageEnglish
Pages (from-to)37-49
Number of pages13
JournalInternational Journal of Advanced Structural Engineering
Issue number1
Early online date28 Dec 2016
Publication statusPublished - Mar 2017


  • Cold-formed steel
  • Composite beam
  • Fourier’s series
  • Moment capacity
  • Stress distribution

ASJC Scopus subject areas

  • Civil and Structural Engineering


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