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Steel and Composite Structures
  Volume 7, Number 3, June 2007 , pages 241-251

Torsional rigidity of arbitrarily shaped composite sections by hybrid finite element approach
Kutlu Darllmaz, Engin Orakdogen, Konuralp Girgin and Semih Kucukarslan

    The purpose of this study is to calculate the torsional rigidity of arbitrarily shaped composite sections on the basis of hybrid finite element approach. An analogy is used between the torsion problem and deformation of a plate which exhibits only shear behavior. In the analysis a simple hybrid finite element based on Hellinger-Reissner functional is presented and a set of numerical examples are performed to demonstrate and asses the performance of the developed element in practical applications.
Key Words
    torsional rigidity; Saint-Venant\'s stress function; plate; hybrid finite element.
Kutlu Darllmaz, Engin Orakdogen and Konuralp Girgin; Istanbul Technical University, Faculty of Civil Engineering, 34469, Istanbul, Turkey
Semih Kucukarslan; Istanbul Technical University, Faculty of Art & Letters, Department of Engineering Sciences, 34469, Istanbul, Turkey

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