Rajana, K, Tsavdaridis, KD orcid.org/0000-0001-8349-3979 and Koltsakis, E (2020) Elastic and inelastic buckling of steel cellular beams under strong-axis bending. Thin-Walled Structures, 156. 106955. ISSN 0263-8231
Abstract
This paper presents an extensive parametric study of elastic and inelastic buckling of cellular beams subjected to strong axis bending in order to investigate the effect of a variety of geometric parameters, and further generate mass data to validate and train a neural network-based formula. Python was employed to automate mass finite element (FE) analyses and reliably examine the influence of the parameters. Overall, 102,060 FE analyses were performed. The effects of the initial geometric imperfection, material nonlinearity, manufacture-introduced residual stresses, web opening diameter, web-post width, web height, flange width, web and flange thickness, end web-post width, and span of the beams and their combinations were thoroughly examined. The results are also compared with the current state-of-the-art design guidelines used in the UK.
It was concluded that the critical elastic buckling load of perforated beams corresponds to the lateral movement of the compression flange while the most critical parameters are the web thickness and the geometry of the flange. However, from the inelastic analysis, the geometry and position of the web opening influence the collapse load capacity in a similar fashion to the geometry of the flange and thickness of the web. It was also concluded that the effect of the initial conditions was insignificant.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Elsevier Ltd. All rights reserved. This is an author produced version of an article published in Thin-Walled Structures. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Cellular beams; Elastic and inelastic buckling; Strong-axis bending; FEA; Parametric studies; Automated analyses; Python; Mass data |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 07 Sep 2020 14:36 |
Last Modified: | 29 Aug 2021 00:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.tws.2020.106955 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:165162 |