This is a study of the rectangular thin-walled cross section beam under torsion, with particular regard to the local effects by improving the mathematical model proposed in a previous study (Mentrasti 1987). The shearing strain is considered explicitly in order to easily investigate the loading and the constraint conditions that are not considered in the classical analysis. The details of the study are described. It was found that when the shearing stress is taken into account by means of polynomial shape functions up to degree five in the web, the governing equilibrium equations of a rectangular thin-walled box beam can be written as a differential system in the unknown functions theta(zeta) and phi(zeta). This and other findings are discussed.

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  • Accession Number: 00488826
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 31 1989 12:00AM