Structural Engineering and Mechanics

  • 제57권2호
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  • Pages.221-238
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  • 2016
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Dynamic analysis of helicoidal bars with non-circular cross-sections via mixed FEM

  • Eratli, Nihal (Department of Civil Engineering, Istanbul Technical University) ;
  • Yilmaz, Murat (Department of Civil Engineering, Istanbul Technical University) ;
  • Darilmaz, Kutlu (Department of Civil Engineering, Istanbul Technical University) ;
  • Omurtag, Mehmet H. (Department of Civil Engineering, Istanbul Technical University)
  • 투고 : 2015.01.22
  • 심사 : 2015.12.08
  • 발행 : 2016.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

One of the objectives of this study is to implement the direct calculation of the torsional moment of inertia for non-circular cross-sections, which is based on the St. Venant torsion formulation and the finite element method. Recently the proposed method provides a unique calculation of the torsional rigidity of simply and multiply connected cross-sections. Next, free vibration analyses of cylindrical and non-cylindrical helices with non-circular cross-sections are solved by a curved two-nodded mixed finite element based on the Timoshenko beam theory. Some thin-thick closed or open sections are handled and the natural frequencies of cylindrical and non-cylindrical helices are compared with the literature and the commercial finite element program SAP2000.

키워드

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  2. Static and dynamic analysis of conical helices based on exact geometry via mixed FEM vol.131-132, 2017, https://doi.org/10.1016/j.ijmecsci.2017.07.010
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