Fatigue strength of fixed offshore structures under variable amplitude loading due to wind, wave, and ice action
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 s...
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fttuhamburg:oai:tore.tuhh.de:11420/14176 2023-08-20T04:02:44+02:00 Fatigue strength of fixed offshore structures under variable amplitude loading due to wind, wave, and ice action Braun, Moritz Dörner, Alfons Willems, Tom Seidel, Marc Hendrikse, Hayo Høyland, Knut V. Fischer, Claas Ehlers, Sören 2022-06 http://hdl.handle.net/11420/14176 en eng ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022 9780791885918 MarTERA - Experimentelle, analytische und numerische Untersuchung und Modellierungen von Eislasten am Propeller ASME 41st International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2022) http://hdl.handle.net/11420/14176 2-s2.0-85140913006 Arctic technology Ice loads Offshore renewable energies Stress analysis Structural integrity Wind turbine fatigue damage and life extension Conference Paper Other 2022 fttuhamburg 2023-07-28T09:23:23Z 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. Conference Object Arctic Arctic Sea ice TUHH Open Research (TORE - Technische Universität Hamburg) Arctic |
institution |
Open Polar |
collection |
TUHH Open Research (TORE - Technische Universität Hamburg) |
op_collection_id |
fttuhamburg |
language |
English |
topic |
Arctic technology Ice loads Offshore renewable energies Stress analysis Structural integrity Wind turbine fatigue damage and life extension |
spellingShingle |
Arctic technology Ice loads Offshore renewable energies Stress analysis Structural integrity Wind turbine fatigue damage and life extension Braun, Moritz Dörner, Alfons Willems, Tom Seidel, Marc Hendrikse, Hayo Høyland, Knut V. Fischer, Claas Ehlers, Sören Fatigue strength of fixed offshore structures under variable amplitude loading due to wind, wave, and ice action |
topic_facet |
Arctic technology Ice loads Offshore renewable energies Stress analysis Structural integrity Wind turbine fatigue damage and life extension |
description |
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. |
format |
Conference Object |
author |
Braun, Moritz Dörner, Alfons Willems, Tom Seidel, Marc Hendrikse, Hayo Høyland, Knut V. Fischer, Claas Ehlers, Sören |
author_facet |
Braun, Moritz Dörner, Alfons Willems, Tom Seidel, Marc Hendrikse, Hayo Høyland, Knut V. Fischer, Claas Ehlers, Sören |
author_sort |
Braun, Moritz |
title |
Fatigue strength of fixed offshore structures under variable amplitude loading due to wind, wave, and ice action |
title_short |
Fatigue strength of fixed offshore structures under variable amplitude loading due to wind, wave, and ice action |
title_full |
Fatigue strength of fixed offshore structures under variable amplitude loading due to wind, wave, and ice action |
title_fullStr |
Fatigue strength of fixed offshore structures under variable amplitude loading due to wind, wave, and ice action |
title_full_unstemmed |
Fatigue strength of fixed offshore structures under variable amplitude loading due to wind, wave, and ice action |
title_sort |
fatigue strength of fixed offshore structures under variable amplitude loading due to wind, wave, and ice action |
publishDate |
2022 |
url |
http://hdl.handle.net/11420/14176 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Sea ice |
genre_facet |
Arctic Arctic Sea ice |
op_relation |
ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022 9780791885918 MarTERA - Experimentelle, analytische und numerische Untersuchung und Modellierungen von Eislasten am Propeller ASME 41st International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2022) http://hdl.handle.net/11420/14176 2-s2.0-85140913006 |
_version_ |
1774713343792119808 |