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자료유형
학술저널
저자정보
Kim, D.K. (Civil Engineering Department, Universiti Teknologi PETRONAS) Choi, H.S. (Graduate School of Engineering Mastership, Pohang University of Science and Technology) Shin, C.S. (Graduate School of Engineering Mastership, Pohang University of Science and Technology) Liew, M.S. (Faculty of Geoscience and Petroleum Engineering, Universiti Teknologi PETRONAS) Yu, S.Y. (Deepwater Technology Mission Oriented Research, Universiti Teknologi PETORNAS) Park, K.S. (Steel Business Division, POSCO)
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제53권 제5호
발행연도
2015.1
수록면
881 - 896 (16page)

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In this study, a method for fatigue performance estimation of deepwater steel catenary riser (SCR) under short-term vortex-induced vibration was investigated for selected S-N curves. General tendency between S-N curve capacity and fatigue performance was analysed. SCRs are generally used to transport produced oil and gas or to export separated oil and gas, and are exposed to various environmental loads in terms of current, wave, wind and others. Current is closely related with VIV and it affects fatigue life of riser structures significantly. In this regards, the process of appropriate S-N curve selection was performed in the initial design stage based on the scale of fabrication-related initial imperfections such as welding, hot spot, crack, stress concentration factor, and others. To draw the general tendency, the effects of stress concentration factor (SCF), S-N curve type, current profile, and three different sizes of SCRs were considered, and the relationship between S-N curve capacity and short-term VIV fatigue performance of SCR was derived. In case of S-N curve selection, DNV (2012) guideline was adopted and four different current profiles of the Gulf of Mexico (normal condition and Hurricane condition) and Brazil (Amazon basin and Campos basin) were considered. The obtained results will be useful to select the S-N curve for deepwater SCRs and also to understand the relationship between S-N curve capacity and short-term VIV fatigue performance of deepwater SCRs.

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