Effects of second-order wave force on fatigue damage assessment of a tlp-type floating wind turbine
Paper in proceedings, 2020

Resonant and transient responses of a tension leg platform (TLP)-type floating offshore wind turbine can be excited by high-frequency wave forces. This paper investigates the damaging effect of second-order wave forces on structural fatigue in the WindStar TLP system. Dynamic responses in the time domain are analyzed using the program FAST. To explore the mechanisms of different combinations of wind and wave loads inducing damage, five scenarios are considered: wind only, first-order wave only, second-order wave only, joint wind and first-order wave, and joint wind and second-order wave. The results show the dominant effect of second-order waves in tower structural fatigue damage. Additionally, wind and wave coupling becomes stronger under second-order wave loads.

Fatigue damage

Floating wind turbine

TLP platform, Second-order wave force

Author

Jia Rong Liu

Shanghai Jiao Tong University

Yong Sheng Zhao

Shanghai Jiao Tong University

Yan Ping He

Shanghai Jiao Tong University

Yan Lin Shao

Technical University of Denmark (DTU)

Wengang Mao

Chalmers, Mechanics and Maritime Sciences, Marine Technology

Zhao Long Han

Shanghai Jiao Tong University

Xiao Li Gu

Shanghai Jiao Tong University

Chao-Huang

Shanghai Jiao Tong University

Proceedings of the International Offshore and Polar Engineering Conference

10986189 (ISSN) 15551792 (eISSN)

Vol. 2020-October 415-422

30th International Ocean and Polar Engineering Conference, ISOPE 2020
Virtual, Online, ,

Subject Categories

Applied Mechanics

Marine Engineering

Fusion, Plasma and Space Physics

More information

Latest update

11/5/2020