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Experimental investigation of four-point bending of thin walled open section steel beam loaded and set in the shear center


[ 1 ] Instytut Mechaniki Stosowanej, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ 2 ] Instytut Konstrukcji Maszyn, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ P ] employee | [ E ] pensioner

Scientific discipline (Law 2.0)

[2.8] Mechanical engineering

Title variant

PL Badania doświadczalne czteropunktowego zginania cienkościennej belki o przekroju otwartym, podpartej i obciążonej w środku sił poprzecznych

Year of publication


Published in

Scientific Reports

Journal year: 2022 | Journal volume: vol. 12

Article type

scientific article

Publication language


  • Thin walled cold formed beam buckling
  • experimental and analytical buckling of thin walled structures
  • four point bending steel beam load

EN Thin walled cold formed structures were, and still are, very popular structural elements used in mechanical engineering. Modern technology and the progress in materials engineering allow to fabricate various shapes of thin walled cold formed components. Therefore, combinations between technology possibilities, material properties, loads and engineering requirements are wide and unlimited for thin walled components. The aim of this paper is to perform an experimental study of cold formed C‑channel steel beams under four‑points bending loads based on the global and the local buckling phenomena. A test rig was developed with a specially designed support system to subject thin‑walled steel beams to a four‑point bending load, where the support and loads were applied to the shear center of the open section steel beam. It is shown that it is not possible to completely eliminate the torque load on a thin‑walled beam with an open section where load and support are applied in the shear center because investigated beams weren’t ideal made. Thin walled open section beams are very sensitive for boundary conditions and geometrical accuracy. The force of gravity is also working. The presented research methodology can be improved and do test with other open section thin walled beams.

Pages (from - to)

7275-1 - 7275-17





article number: 7275

License type

CC BY (attribution alone)

Open Access Mode

open journal

Open Access Text Version

final published version

Date of Open Access to the publication

at the time of publication

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Impact Factor

4.380 [List 2020]

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