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

Sadowski, Adam J.
Seidel, Marc
Al-Lawati, Hussain
Azizi, Esmaeil
Balscheit, Hagen
Böhm, Manuela
Chen, Lei
van Dijk, Ingmar
Doerich-Stavridis, Cornelia
Fajuyitan, Oluwole Kunle
Filippidis, Achilleas
Fischer, Astrid Winther
Fischer, Claas
Gerasimidis, Simos
Karampour, Hassan
Kathirkamanathan, Lijithan
Marten, Frithjof
Mihara, Yasuko
Mishra, Shashank
Sakharov, Volodymyr
Shahini, Amela
Subramanian, Saravanan
Topkaya, Cem
Wagner, Heinz Norbert Ronald
Wang, Jianze
Wang, Jie
Yadav, Kshitij Kumar
Yun, Xiang
Zhang, Pan
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.
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Citation Formats
A. J. Sadowski et al., “8-MW wind turbine tower computational shell buckling benchmark. Part 1: An international ‘round-robin’ exercise,” Engineering Failure Analysis, vol. 148, pp. 0–0, 2023, Accessed: 00, 2023. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85150292508&origin=inward.