Effect of foundation modelling on the fatigue lifetime of a monopile-based offshore wind turbine
Several studies have emphasized the importance of modelling foundation response with representative damping and stiffness characteristics in integrated analyses of offshore wind turbines (OWTs). For the monopile foundation, the industry standard for pile analysis has shown to be inaccurate, and...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2017-07-01
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| Series: | Wind Energy Science |
| Online Access: | https://www.wind-energ-sci.net/2/361/2017/wes-2-361-2017.pdf |
| Summary: | Several studies have emphasized the importance of modelling foundation
response with representative damping and stiffness characteristics in
integrated analyses of offshore wind turbines (OWTs). For the monopile
foundation, the industry standard for pile analysis has shown to be
inaccurate, and alternative models that simulate foundation behaviour more
accurately are needed. As fatigue damage is a critical factor in the design
phase, this study investigates how four different
soil-foundation models
affect the fatigue damage of an OWT with a monopile foundation. This study
shows how both stiffness and damping properties have a noticeable effect on
the fatigue damage, in particular for idling cases. At mud-line, accumulated
fatigue damage varied up to 22 % depending on the foundation model used. |
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| ISSN: | 2366-7443 2366-7451 |