Structural responses of large-sized floating wind turbine with consideration of mooring-line dynamics based on coupled FEM simulations

The dynamic response of a 5 MW floating wind turbine is examined using the coupled finite element simulations, and the dynamic effects of the catenary is considered, while the coupling between flexible components are included. The restoring performance of the mooring-line is analysed based on the vector equations and numerical simulations. The stiffness hysteresis and the influence of the catenary dynamics on the restoring performance are studied. Then the structural responses undergoing wind and wave loads, are examined. The authors' results show that the mooring-line tension significantly rise due to catenary dynamics, and the snap tension gets around three times larger. The mooring-line stiffness presents a hysteresis character, owing to the fluid/structural damping, which becomes more obvious with the increase of motion frequency/amplitude. Moreover, the structural response gets smaller principally because of the hysteresis effect. The spar displacement and the tower root stress become respectively 18.4% and 32.7% smaller.

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    • © 2021 Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
  • Authors:
    • Guo, Shuangxi
    • Li, Yilun
    • Li, Min
    • Chen, Weimin
    • Kong, Yue
  • Publication Date: 2022-6


  • English

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  • Accession Number: 01855785
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 24 2022 3:02PM