Title
Buckling behavior of built-up thin-walled I-beams with trapezoidal flanged cores
Authors
[ 1 ] Instytut Mechaniki Stosowanej, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ SzD ] doctoral school student | [ P ] employee
Scientific discipline (Law 2.0)
Year of publication
2025
Published in
Article type
scientific article
Publication language
english
Keywords
EN
- Thin-walled beams
- FEM
- Experimental investigation
- Buckling
- Built-up section
- Joints
Abstract
EN This paper focuses on the stability of thin-walled I-beams with sandwich trapezoidal flanges subjected to a three-point bending test. The flange structure consists of a channel beam flange, a trapezoidal corrugated core, and an external flat metal sheet. The stability of the I-beam was analyzed using two approaches: experimental testing and numerical analysis based on the finite element method (FEM). The experimental tests were conducted for two different methods of joining the flange layers (welding and adhesive bonding), revealing notable differences between the methods, particularly in larger displacements. Strain gauges were applied to the flange and web to measure shear stresses during the three-point test. The numerical FEM analysis determined the critical load values and buckling modes for various beam lengths, while also calculating shear stresses. Additionally, numerical studies of beams with nonsymmetric flanges showed higher critical force values compared to symmetric beams.
Date of online publication
04.03.2025
Pages (from - to)
120004-1 - 120004-14
Ministry points / journal
140
Impact Factor
5,6 [List 2023]
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