Fatigue Strength Of Fixed Offshore Structures Under Variable Amplitude Loading Due To Wind, Wave, And Ice Action

Moritz  Braun; Alfons  Dörner; Tom Willems; Marc Seidel; H. Hendrikse; Knut V. Høyland; Claas  Fischer; Sören  Ehlers

doi:10.1115/OMAE2022-78764

Fatigue Strength Of Fixed Offshore Structures Under Variable Amplitude Loading Due To Wind, Wave, And Ice Action

Moritz Braun, Alfons Dörner, Tom Willems, Marc Seidel, H. Hendrikse, Knut V. Høyland, Claas Fischer, Sören Ehlers

Offshore Engineering

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

1 Citation (Scopus)

28 Downloads (Pure)

Abstract

Fixed offshore wind turbines are increasingly developed for high latitude areas where not only wind and wave loads need to be considered, but also moving sea ice. Current structural design rules do not adequately consider the effect of ice loading on fatigue life, due to missing studies on fatigue strength of welded joints under combined wind, wave, and ice action. Thus, a methodology to determine combined variable-amplitude loading (VAL) spectra was developed in a previous study. The stress state time-history at an exemplarily selected point in the support structure of an offshore wind energy monopile was translated into a VAL sequence. This sequence is used as an input for fatigue tests of butt-welded joints in the current study. The current study presents the VAL spectrum and the corresponding VAL time series, the results of the fatigue tests and compares them to typical fatigue damage sums for other stress spectra.

Original language	English
Title of host publication	Polar and Arctic Sciences and Technology
Place of Publication	Hamburg, Germany
Publisher	The American Society of Mechanical Engineers (ASME)
Number of pages	7
ISBN (Electronic)	978-0-7918-8591-8
DOIs	https://doi.org/10.1115/OMAE2022-78764
Publication status	Published - 2022
Event	ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022 - Congress Center Hamburg, Hamburg, Germany Duration: 5 Jun 2022 → 10 Jun 2022 https://event.asme.org/OMAE-2022

Publication series

Name	Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Volume	6

Conference

Conference	ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022
Abbreviated title	OMAE 2022
Country/Territory	Germany
City	Hamburg
Period	5/06/22 → 10/06/22
Internet address	https://event.asme.org/OMAE-2022

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

Arctic technology
ice loads
stress analysis
offshore renewable energies
wind turbine fatigue damage and life extension
structural integrity

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1115/OMAE2022-78764

OMAE2022_78764BraunetalFinal published version, 555 KB

Cite this

Braun, M., Dörner, A., Willems, T., Seidel, M., Hendrikse, H., Høyland, K. V., Fischer, C., & Ehlers, S. (2022). Fatigue Strength Of Fixed Offshore Structures Under Variable Amplitude Loading Due To Wind, Wave, And Ice Action. In Polar and Arctic Sciences and Technology Article OMAE2022-78764 (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 6). The American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/OMAE2022-78764

Braun, Moritz ; Dörner, Alfons ; Willems, Tom et al. / Fatigue Strength Of Fixed Offshore Structures Under Variable Amplitude Loading Due To Wind, Wave, And Ice Action. Polar and Arctic Sciences and Technology. Hamburg, Germany : The American Society of Mechanical Engineers (ASME), 2022. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE).

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title = "Fatigue Strength Of Fixed Offshore Structures Under Variable Amplitude Loading Due To Wind, Wave, And Ice Action",

abstract = "Fixed offshore wind turbines are increasingly developed for high latitude areas where not only wind and wave loads need to be considered, but also moving sea ice. Current structural design rules do not adequately consider the effect of ice loading on fatigue life, due to missing studies on fatigue strength of welded joints under combined wind, wave, and ice action. Thus, a methodology to determine combined variable-amplitude loading (VAL) spectra was developed in a previous study. The stress state time-history at an exemplarily selected point in the support structure of an offshore wind energy monopile was translated into a VAL sequence. This sequence is used as an input for fatigue tests of butt-welded joints in the current study. The current study presents the VAL spectrum and the corresponding VAL time series, the results of the fatigue tests and compares them to typical fatigue damage sums for other stress spectra.",

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author = "Moritz Braun and Alfons D{\"o}rner and Tom Willems and Marc Seidel and H. Hendrikse and H{\o}yland, {Knut V.} and Claas Fischer and S{\"o}ren Ehlers",

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Braun, M, Dörner, A, Willems, T, Seidel, M, Hendrikse, H, Høyland, KV, Fischer, C & Ehlers, S 2022, Fatigue Strength Of Fixed Offshore Structures Under Variable Amplitude Loading Due To Wind, Wave, And Ice Action. in Polar and Arctic Sciences and Technology., OMAE2022-78764, Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE, vol. 6, The American Society of Mechanical Engineers (ASME), Hamburg, Germany, ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022, Hamburg, Germany, 5/06/22. https://doi.org/10.1115/OMAE2022-78764

Fatigue Strength Of Fixed Offshore Structures Under Variable Amplitude Loading Due To Wind, Wave, And Ice Action. / Braun, Moritz ; Dörner, Alfons ; Willems, Tom et al.
Polar and Arctic Sciences and Technology. Hamburg, Germany: The American Society of Mechanical Engineers (ASME), 2022. OMAE2022-78764 (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 6).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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T1 - Fatigue Strength Of Fixed Offshore Structures Under Variable Amplitude Loading Due To Wind, Wave, And Ice Action

AU - Braun, Moritz

AU - Dörner, Alfons

AU - Willems, Tom

AU - Seidel, Marc

AU - Hendrikse, H.

AU - Høyland, Knut V.

AU - Fischer, Claas

AU - Ehlers, Sören

N1 - Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2022

Y1 - 2022

N2 - Fixed offshore wind turbines are increasingly developed for high latitude areas where not only wind and wave loads need to be considered, but also moving sea ice. Current structural design rules do not adequately consider the effect of ice loading on fatigue life, due to missing studies on fatigue strength of welded joints under combined wind, wave, and ice action. Thus, a methodology to determine combined variable-amplitude loading (VAL) spectra was developed in a previous study. The stress state time-history at an exemplarily selected point in the support structure of an offshore wind energy monopile was translated into a VAL sequence. This sequence is used as an input for fatigue tests of butt-welded joints in the current study. The current study presents the VAL spectrum and the corresponding VAL time series, the results of the fatigue tests and compares them to typical fatigue damage sums for other stress spectra.

AB - Fixed offshore wind turbines are increasingly developed for high latitude areas where not only wind and wave loads need to be considered, but also moving sea ice. Current structural design rules do not adequately consider the effect of ice loading on fatigue life, due to missing studies on fatigue strength of welded joints under combined wind, wave, and ice action. Thus, a methodology to determine combined variable-amplitude loading (VAL) spectra was developed in a previous study. The stress state time-history at an exemplarily selected point in the support structure of an offshore wind energy monopile was translated into a VAL sequence. This sequence is used as an input for fatigue tests of butt-welded joints in the current study. The current study presents the VAL spectrum and the corresponding VAL time series, the results of the fatigue tests and compares them to typical fatigue damage sums for other stress spectra.

KW - Arctic technology

KW - ice loads

KW - stress analysis

KW - offshore renewable energies

KW - wind turbine fatigue damage and life extension

KW - structural integrity

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M3 - Conference contribution

T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

BT - Polar and Arctic Sciences and Technology

PB - The American Society of Mechanical Engineers (ASME)

CY - Hamburg, Germany

T2 - ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022

Y2 - 5 June 2022 through 10 June 2022

ER -

Braun M, Dörner A, Willems T, Seidel M, Hendrikse H, Høyland KV et al. Fatigue Strength Of Fixed Offshore Structures Under Variable Amplitude Loading Due To Wind, Wave, And Ice Action. In Polar and Arctic Sciences and Technology. Hamburg, Germany: The American Society of Mechanical Engineers (ASME). 2022. OMAE2022-78764. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE). doi: 10.1115/OMAE2022-78764

Fatigue Strength Of Fixed Offshore Structures Under Variable Amplitude Loading Due To Wind, Wave, And Ice Action

Abstract

Publication series

Conference

Bibliographical note

Keywords

UN SDGs

Access to Document

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