Abstract
The limit state of a newly proposed floating wind turbine concept, in terms of ultimate structural load and fatigue damage load, is studied in the present work. This novel floating structure utilizes a triple-column spar platform to support the wind turbine. An aero-hydro-servo-elastic numerical model is developed to simulate its coupled dynamics. The probability distribution of the ultimate structural load is estimated based on the Monte-Carlo method. In order to reduce computation endeavor, a statistic model is used to extrapolate the sampled-based distribution function. The S-N curve method, a state-of-art fatigue analysis approach, is used to assess the fatigue damage load. The limit states of tower base and fairlead are investigated. It is shown that the newly proposed triple-column spar concept suffers less fatigue damage and the ultimate structural loads are also reduced, resulting in the enhancement of safety level of the floating wind turbine system.
| Original language | English |
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| Title of host publication | 30th International Ocean and Polar Engineering Conference |
| Place of Publication | Cupertino, Calif |
| Publisher | International Society of Offshore and Polar Engineers |
| Pages | 440-445 |
| Number of pages | 6 |
| ISBN (Electronic) | 9781880653845 |
| ISBN (Print) | 978-1-880653-84-5 |
| Publication status | Published - 11 Oct 2020 |
| Event | 30th International Ocean and Polar Engineering Conference, ISOPE 2020 - Virtual, Online, China Duration: 11 Oct 2020 → 16 Oct 2020 |
Conference
| Conference | 30th International Ocean and Polar Engineering Conference, ISOPE 2020 |
|---|---|
| Country/Territory | China |
| City | Virtual, Online |
| Period | 11/10/20 → 16/10/20 |
Keywords
- floating wind turbine
- triple-column spar
- limit state
- ultimate structural load
- fatigue damage