City Research Online

Abstract

A new cellular beam with sinusoidal shape of web openings, aka Angelina™, shows different behaviour in comparison with the standard beams with openings. It has its lateral-torsional buckling (LTB) resistance affected by residual stress in a more significant way than the beams with solid webs since the thin-walled plates are subject to the castellation process by thermal cutting and welding. The present study aims to predict the LTB resistance of high-strength steel (HSS) I-beams with sinusoidal web openings. For this, a finite element model is developed based on experimental tests, considering common and HSS. Buckling and post-buckling is performed. A parametric study is conducted by varying the strength of steel. It is expected that by increasing the strength of steel, there will be an increase in the lateral-torsional buckling resistance, mainly in the inelastic regime. The increase of the resistance for the different kind of steel analysed is proportional to the upgrade in the steel strength.

Publication Type:	Conference or Workshop Item (Paper)
Additional Information:	This paper has been presented at International Conference on Steel and Aluminium Structures (ICSAS 2024).
Publisher Keywords:	High-strength steel; Perforated beams; Stability; Lateral-torsional buckling; Sinusoidal web opening; Residual stress; Finite element method
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction
Departments:	School of Science & Technology School of Science & Technology > Engineering
SWORD Depositor:	Symplectic Administrator

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