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8-MW wind turbine tower computational shell buckling benchmark. Part 2: detailed reference solution

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Title: 8-MW wind turbine tower computational shell buckling benchmark. Part 2: detailed reference solution
Authors: Sadowski, A
Seidel, M
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 presents a detailed reference solution to the computational buckling analysis of a standardised benchmark problem of an 8-MW multi-strake wind turbine support tower. Both linear and nonlinear analyses are performed, including advanced GMNIA with several different models of geometric imperfections. The crucial issue of interpreting the imperfection amplitude in a way that is compliant with the new prEN 1993-1-6 is discussed in detail. The solution presented herein is intended for use by analysts in both industry and academia for training, verification and calibration of finite element models and is intended to initiate a public repository of such computational solutions for metal civil engineering shell structures. This paper is the second of a pair. The first paper presents a synthesis of 29 submissions to an international round-robin exercise performed on the same benchmark problem.
Issue Date: Jun-2023
Date of Acceptance: 13-Feb-2023
URI: http://hdl.handle.net/10044/1/102971
DOI: 10.1016/j.engfailanal.2023.107133
ISSN: 1350-6307
Publisher: Elsevier
Start Page: 1
End Page: 41
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: 107133
Online Publication Date: 2023-02-17
Appears in Collections:Civil and Environmental Engineering
Faculty of Engineering



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