Stress analyses of the offshore wind turbine structures subjected to ocean waves

Yu Yun Lin, Ssu Yu Peng

研究成果: Conference contribution

摘要

Two common offshore wind turbine structures, the monopile type and the jacket type, subjected to ocean wave load were analyzed using finite element simulations. The FEM models were built in ABAQUS, and applied the load combinations consisting of the structural weight, the weight of wind turbine, the wind force, and the ocean wave force. In the analyses, we especially focused on the connection between the tower and the supporting structures, because wind force and ocean wave force may cause the damage to occur at the connections. In the model of the monopile structure, the grout connection to tie the upper steel tower and the lower steel pile is modeled by 3D cohesive elements. In the model of the jacket structure, the connection is a joint welded inclined members to tie the upper tower and the lower sleeves. Ocean wave forces acting on the structures are calculated based on Morison's equation, using the wave velocity and acceleration estimated by linear wave theorem and the site conditions of the wind farm in Taiwan. Both static and dynamic analyses with the distributed ocean wave force were carried out. Its effects on the stresses and deformation of two wind turbine structures were then investigated. We also discussed the possibility of using duplex stainless steel instead of mild carbon steel in the connection part of the jacket structure, because duplex steel has high yielding strength and excellent corrosion resistivity.

原文English
主出版物標題Proceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017
發行者Society of Petroleum Engineers
頁面320-324
頁數5
ISBN(電子)9781880653975
出版狀態Published - 2017
事件27th International Ocean and Polar Engineering Conference, ISOPE 2017 - San Francisco, United States
持續時間: 2017 六月 252017 六月 30

出版系列

名字Proceedings of the International Offshore and Polar Engineering Conference
ISSN(列印)1098-6189
ISSN(電子)1555-1792

Other

Other27th International Ocean and Polar Engineering Conference, ISOPE 2017
國家/地區United States
城市San Francisco
期間17-06-2517-06-30

All Science Journal Classification (ASJC) codes

  • 能源工程與電力技術
  • 海洋工程
  • 機械工業

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