Title
Bending behaviour of thin-walled perforated channel beams with modified cross sectional shape – Part 1: experimental tests and FSM
Authors
[ 1 ] Instytut Mechaniki Stosowanej, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ P ] employee | [ SzD ] doctoral school student
Scientific discipline (Law 2.0)
Year of publication
2025
Article type
scientific article
Publication language
english
Keywords
EN
- thin-walled channel beams
- web perforations
- four-point bending
- structural stability
- buckling analysis
Abstract
EN The subject of this study is thin-walled channel sections with a modified cross-sectional shape. The investigation involved six beams, three of which had perforations on the web, while the other three had a flat, solid web. The beams were subjected to four-point bending tests. Experimental tests were conducted using both electronic and optical methods, with a test setup specifically designed for this investigation. Additionally, numerical analyses were performed using the Finite Strip Method. The primary objective of the research was to determine the impact of web perforations on the strength and stability of the bent beams. The perforation of the web also resulted in a reduction in the overall weight of the structure, thereby decreasing material consumption. Based on the research, the critical forces and maximum forces at which total loss of load-bearing capacity occurred were determined. Furthermore, the buckling modes of the beams were identified. The study revealed that the critical and maximum forces for beams with perforated webs were lower compared to beams with a flat, solid web. However, the significant reduction in weight for the perforated beams suggests that their use remains advantageous. The results of FEM and analytical analyses, essential for modeling and understanding complex behaviors in thin-walled structures, will be presented in the second part of this publication to maintain clarity and accessibility.
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
in press
Ministry points / journal
100
Impact Factor
1,2 [List 2023]
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