Steel and Composite Structures

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The torsional stiffness of bars with L, [, +, I, and □ cross-section

  • Gorzelanczyk, Piotr (Higher Vocational State School Pila, Polytechnic Institute) ;
  • Tylicki, Henryk (University of Technology and Life Science in Bydgoszcz, Faculty of Mechanical Engineering) ;
  • Kolodziej, Jan A. (Institute of Applied Mechanics, Poznan University of Technology)
  • Received : 2007.08.08
  • Accepted : 2007.10.22
  • Published : 2007.12.25
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Abstract

In literature for thin-walled sections with L, [, +, I, and ${\Box}$- shapes the approximate torsion equations for stiffness are used which were proposed by Bach (Hsu 1984), p.30. New formulae for torsional stiffness of bars with L, [, +, I, and ${\Box}$ cross section valid not only for thin-walled sections are presented in this paper. These formulae are obtained by appropriate polynomial approximation of stiffness results obtained by means of method of fundamental solutions. On the base of obtained results the validity of Bach's formulae are verified when cross section is not thin-walled.

Keywords

References

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