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극한 해상상황에서 파 에너지 성분 별 2차 유체력 하중이 계류선 응답과 손상 등가 피로 성능에 미치는 영향 분석Analysis of Second Hydrodynamic Loads Effect on the Mooring Line Response and Damage Equivalent Fatigue by Wave Energy Components Under Extreme Sea Conditions
- Other Titles
- Analysis of Second Hydrodynamic Loads Effect on the Mooring Line Response and Damage Equivalent Fatigue by Wave Energy Components Under Extreme Sea Conditions
- Issue Date
- Dec-2019
- Publisher
- 한국생산제조학회
- Keywords
- Swell and wind sea energy; Hurricane; Second order hydrodynamic load; Extreme sea condition; Damage equivalent fatigue load; Semi-submersible platform
- Citation
- 한국생산제조학회지, v.28, no.6, pp.368 - 374
- Indexed
- KCI
- Journal Title
- 한국생산제조학회지
- Volume
- 28
- Number
- 6
- Start Page
- 368
- End Page
- 374
- ISSN
- 2508-5093
- Abstract
- In this study, we analyzed the effect of the second hydrodynamic loads on mooring line response and damage equivalent fatigue by wave energy components under the extreme sea conditions. To examine this effect, the dynamic responses of offshore wind turbine structures were evaluated by separating each component and coupling it with a HydroDyn module of the NREL FAST software. It was found that the wave energy affecting the mooring tension is larger in the swell than in the wind sea and thus creates larger mean position changes in the structure. In conclusion, the second hydrodynamic load influenced the behavior of the structure, which significantly affects the damage equivalent fatigue of the mooring line.
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Related Researcher
- Yang, Hyun ik
- ERICA 공학대학 (DEPARTMENT OF MECHANICAL ENGINEERING)