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8-MW wind turbine tower computational shell buckling benchmark, Part 1: an international ‘round-robin’ exercise

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Title: 8-MW wind turbine tower computational shell buckling benchmark, Part 1: an international ‘round-robin’ exercise
Authors: Sadowski, A
Seidel, M
Al-Lawati, H
Azizi, E
Balscheit, H
Böhm, M
Chen, L
Van Dijk, I
Doerich-Stavridis, C
Fajuyitan, OK
Filippidis, A
Fischer, AW
Fischer, C
Gerasimidis, S
Karampour, H
Kathirkamanathan, L
Marten, F
Mihara, Y
Mishra, S
Sakharov, V
Shahini, A
Subramanian, S
Topkaya, C
Wagner, HNR
Wang, J
Wang, J
Yadav, KK
Yun, X
Zhang, P
Item Type: Journal Article
Abstract: An assessment of the elastic-plastic buckling limit state for multi-strake wind turbine support towers poses a particular challenge for the modern finite element analyst, who must competently navigate numerous modelling choices related to the tug-of-war between meshing and computational cost, the use of solvers that are robust to highly nonlinear behaviour, the potential for multiple near-simultaneously critical failure locations, the complex issue of imperfection sensitivity and finally the interpretation of the data into a safe and economic design. This paper reports on an international ‘round-robin’ exercise conducted in 2022 aiming to take stock of the computational shell buckling expertise around the world which attracted 29 submissions. Participants were asked to perform analyses of increasing complexity on a standardised benchmark of an 8-MW multi-strake steel wind turbine support tower segment, from a linear elastic stress analysis to a linear bifurcation analysis to a geometrically and materially nonlinear buckling analysis with imperfections. The results are a showcase of the significant shell buckling expertise now available in both industry and academia. This paper is the first of a pair. The second paper presents a detailed reference solution to the benchmark, including an illustration of the Eurocode-compliant calibration of two important imperfection forms.
Issue Date: Jun-2023
Date of Acceptance: 11-Feb-2023
URI: http://hdl.handle.net/10044/1/102970
DOI: 10.1016/j.engfailanal.2023.107124
ISSN: 1350-6307
Publisher: Elsevier
Start Page: 1
End Page: 22
Journal / Book Title: Engineering Failure Analysis
Volume: 148
Copyright Statement: © 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Publication Status: Published
Article Number: 107124
Online Publication Date: 2023-02-20
Appears in Collections:Civil and Environmental Engineering



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