Advances in Computational Design

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Design and analysis of offshore wind structure

  • Young-Suk You (JBNU International Offshore Wind International Research Institute, Department of EnergyMechanical Design Engineering, Jeonbuk National University) ;
  • Min-Young Sun (JBNU International Offshore Wind International Research Institute, Department of EnergyMechanical Design Engineering, Jeonbuk National University) ;
  • Young-Ho Lee (Department of Mechanical Engineering, Korea Maritime and Ocean University)
  • Received : 2020.08.19
  • Accepted : 2022.10.20
  • Published : 2023.07.25
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Abstract

The objective of this study was to evaluate the foundation structure of a 3.6-MW wind turbine generator (WTG) installed offshore in Western Korea. The ultimate limit state (ULS) and fatigue limit state (FLS) of the multi-pile steel foundation (MSF) installed at the Saemangeum offshore wind farm were structurally investigated using the finite element (FE) software, ANSYS Workbench 19.0. According to the ULS analysis, no plastic deformation was found in any of the components constituting the substructure. At the same time, the maximal stress value reached the calculation limit of 335 MPa. According to the FLS results, the stress concentration factor (SCF) ranged from 1.00 to 1.88 in all components. The results of this study can be applied to determine the optimal design for MSFs.

Keywords

Acknowledgement

This work is the outcome of the SMG offshore wind farm project. The research team collaborated with SMG Offshore Wind Power Ltd., Co., Gigas Engineering Ltd., Co., and the Offshore Power Plant Institute of Jeonbuk National University.

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