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Study on Optimum Design of FPSO Spread Mooring System  

Lim, Yu-Chang (Dept., of Naval Architecture & Ocean Engineering, Inha University)
Kim, Kyung-Su (Dept., of Naval Architecture & Ocean Engineering, Inha University)
Choung, Joon-Mo (Dept., of Naval Architecture & Ocean Engineering, Inha University)
Kim, Jae-Woo (Dept., of Naval Architecture & Ocean Engineering, Inha University)
Kim, Jin-Tae (Structure Group 2, Daewoo Shipbuilding & Marine Engineering Co. Ltd.)
Yeo, Seung-Hoon (Dept., of Naval Architecture & Ocean Engineering, Inha University)
Publication Information
Journal of Ocean Engineering and Technology / v.23, no.6, 2009 , pp. 61-66 More about this Journal
Abstract
For a spread-moored FPSO (Floating Production, Storage, & Off-loading) subjected to environmental excitation from waves, current, and wind, a procedure to determine optimum length and stiffness of mooring lines is suggested using quasi-static frequency domain response analyses. Coupled relations between design parameters are closely examined. In consideration of this, optimized design parameters are proposed based on minimum weight condition. The initial design parameters for numerical analyses are calculated using the static catenary equation of mooring lines. It is demonstrated the line tension and vessel's offset are influenced by the mooring line length and stiffness. Accordingly it is suggested the optimum vessel's offset range should be determined considering line fatigue damage. The availability and limitation of the application of quasi-static analysis method for spread mooring system are explained by comparing the result of time domain analysis with one of frequency domain analysis.
Keywords
Spread mooring system; Mooring line length; Mooring line stiffness; Catenary equation; Quasi-static analysis; Time domain analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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