Effect of foundation modelling on the fatigue lifetime of a monopile-based offshore wind turbine

Aasen, Steffen; Page, Ana M.; Skjolden Skau, Kristoffer; Nygaard, Tor Anders

doi:https://doi.org/10.5194/wes-2-361-2017

Articles | Volume 2, issue 2

https://doi.org/10.5194/wes-2-361-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/wes-2-361-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 2, issue 2

Research article

|

04 Jul 2017

Research article |

| 04 Jul 2017

Effect of foundation modelling on the fatigue lifetime of a monopile-based offshore wind turbine

Steffen Aasen, Ana M. Page, Kristoffer Skjolden Skau, and Tor Anders Nygaard

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Final revised paper (published on 04 Jul 2017)
Preprint (discussion started on 09 Dec 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Comments', Anonymous Referee #1, 09 Jan 2017
- AC1: 'response to referee 1', Tor Anders Nygaard, 21 Feb 2017
RC2: 'Review', Michael Muskulus, 24 Jan 2017
- AC2: 'response to referee 2', Tor Anders Nygaard, 21 Feb 2017

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Reconsider after major revisions (06 Mar 2017) by Athanasios Kolios

AR by Tor Anders Nygaard on behalf of the Authors (18 Apr 2017) Manuscript

ED: Publish as is (10 May 2017) by Athanasios Kolios

ED: Publish as is (10 May 2017) by Joachim Peinke (Chief editor)

AR by Tor Anders Nygaard on behalf of the Authors (16 May 2017)

Short summary

The industry standard for analysis of monopile foundations is inaccurate, and alternative models for foundation behavior are needed. This study investigates how four different soil-foundation models affect the fatigue damage of an offshore wind turbine with a monopile foundation. Stiffness and damping properties have a noticeable effect, in particular for idling cases. At mud-line, accumulated fatigue damage varied up to 22 % depending on the foundation model used.