Lateral‐Torsional Buckling of beams with warping restraints at Supports
| Autor: | Maxime Lebastard, Maël Couchaux, Mohammed Hjiaj, Alain Bureau |
|---|---|
| Přispěvatelé: | Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA), Laboratoire de Génie Civil et Génie Mécanique (LGCGM), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Centre Technique Industriel de la Construction Métallique (CTICM), Ministère de l'Economie, des Finances et de l'Emploi, Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Quantitative Biology::Biomolecules
Materials science business.industry Warping restraints Torsional buckling 020101 civil engineering 02 engineering and technology General Medicine Structural engineering 021001 nanoscience & nanotechnology Lateral-torsional buckling LTB 0201 civil engineering [SPI]Engineering Sciences [physics] [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering Image warping 0210 nano-technology business Elastic critical bending moment |
| Zdroj: | ce/papers ce/papers, 2021, 4 (2-4), pp.2262-2270. ⟨10.1002/cepa.1548⟩ ce/papers, Ernst & Sohn a Wiley brand, 2021, 4 (2-4), pp.2262-2270. ⟨10.1002/cepa.1548⟩ |
| ISSN: | 2509-7075 |
| DOI: | 10.1002/cepa.1548⟩ |
| Popis: | International audience; In practice, the elastic lateral-torsional buckling of doubly symmetric I-section steel members is analyzed assuming free warping at supports. However, welded stiffeners, bolted end-plate connections or column base plates maintain elastically the opposite flange out-of-plane rotations and thus induce substantial warping restraints.This paper proposes analytical formulations for the evaluation of the elastic critical bending moment for lateral-torsional buckling of beams taking into account warping restraints at supports. Assuming series of displacement and rotation fields containing one or two terms, the energy method permits to derive expressions of the critical bending moment under constant and linear distribution of the bending moment. A single expression of the warping coefficient kw is proposed whatever the shape of the bending moment diagram. The factor C1 can be conveniently calculated by multiplying two coefficients that depend on the shape of the bending moment diagram and on the warping restraint stiffness, respectively.Finite Elements analyses of beams with warping restraints at supports have been performed considering a beam element model developed with LTBeamN and a shell element model created in ANSYS. The analytical model is in good agreement with the numerical results obtained by the two finite element models. |
| Databáze: | OpenAIRE |
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