Simply supported steel beams with rectangular hollow section (RHS) are investigated, taking into account large twist and cross-sections distortions. A closed-form expression for the critical value of the external couple inducing lateral torsional buckling is found; homotopy perturbation method (HPM) is used to investigate the post-buckling non-linear path. The linear and non-linear paths given by HPM are compared to those of: i) a Newton–Raphson algorithm with arc length; and ii) the commercial FEM code Abaqus. Some numerical examples are presented.

Instances of mixed buckling and post-buckling of steel RHS beams / Ziane, Noureddine; Ruta, Giuseppe; Meftah, Sid Ahmed; Doula, Moustafa Hadj; Benmohammed, Noureddine. - In: INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES. - ISSN 0020-7403. - 190:(2020), p. 106013. [10.1016/j.ijmecsci.2020.106013]

Instances of mixed buckling and post-buckling of steel RHS beams

Ruta, Giuseppe
Secondo
Membro del Collaboration Group
;
2020

Abstract

Simply supported steel beams with rectangular hollow section (RHS) are investigated, taking into account large twist and cross-sections distortions. A closed-form expression for the critical value of the external couple inducing lateral torsional buckling is found; homotopy perturbation method (HPM) is used to investigate the post-buckling non-linear path. The linear and non-linear paths given by HPM are compared to those of: i) a Newton–Raphson algorithm with arc length; and ii) the commercial FEM code Abaqus. Some numerical examples are presented.
2020
RHS steel beamsDistortionPost-bucklingHomotopyNewton–Raphson
01 Pubblicazione su rivista::01a Articolo in rivista
Instances of mixed buckling and post-buckling of steel RHS beams / Ziane, Noureddine; Ruta, Giuseppe; Meftah, Sid Ahmed; Doula, Moustafa Hadj; Benmohammed, Noureddine. - In: INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES. - ISSN 0020-7403. - 190:(2020), p. 106013. [10.1016/j.ijmecsci.2020.106013]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1442598
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