The dynamic analysis of a catenary mooring cable due to random motion of an offshore platform is performed in the frequency domain. The nonlinear fluid-drag force is linearized using the statistical linearization technique. A previously developed numerical procedure based on converting a boundary value problem to an equivalent set of initial value problems is utilized to solve the problem, which avoids the need for modal analysis. The method is found to be versatile for the determination of spatially varying drag and the analysis of composite cables in a unified manner. The influence of current on drag damping has also been investigated. The effect of seabed friction damping has also been incorporated in the linearized analysis.
Dynamics of mooring cables in random seas
Dynamik des Halteseils einer Schwimmplattform bei Seegang
Journal of Fluids and Structures ; 16 , 2 ; 193-212
2002
20 Seiten, 13 Bilder, 26 Quellen
Aufsatz (Zeitschrift)
Englisch
Bewegungsgleichung , dynamisches Verhalten , ebene Bewegung , Frequenzbereichsanalyse , Gleitreibung , Halteseil , Hydrodynamik , Linearisierung , Meeresboden , numerisches Verfahren , Randwertproblem , regellose Schwingung , schwimmende Plattform , Schwingungsdämpfung , Seegang , Strömungswiderstand , Verbundstoff
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