... bi-frequency domain sum frequency frequency monochromatic wave mooring system equation upstream oil & gas surge response experiment dual wave subsea system coefficient drift force drift motion wave drift amplitude surge drift motion prediction excitation slow drift motion...

... are largely independent of water depth. The essential platform element is a buoyant tower structure which is restrained at the base by a stiff mooring system. Three (3) basic applications have been identified for the SMAC structure. These are: SMAC Production, where the SMAC structure operates as a wellhead...

... offshore tech dynamic equation simulation frequency procedure sea state tension response fatigue damage htfd approach spectrum mooring system assumption Plouedmgs of the FII st (1990 J EU/ opean OffshOi e Mecham(s Symposium TlOndhelm, NOIway, 20-22 August 1990 Copyl/ght © 1990...

... of CIvil EngIneenng, Oregon State UniverSity Corvalhs, Oregon, USA ABSTRACT In the design and analysis of multi-leg mooring systems, it is significant, but difficult, to determine the tensions in the mooring legs. The analysis is complicated primarily because of the nonlinear behavior of the cables...

..., The horizontal motions associated with the natural frequencies of the mooring system have recently re- ceived much interest. These studies have generally relied on approximations for the second-order low-frequency drift forces (Newman, 1974), (Bowers, 1976), (Pinkster, 1979). However, such approximations tend...

...PlOceedmgs of the F,rst (1990) European OffshOle Meehan/a SymposIum Ttondhelm, Norway, 20-22 August 1990 COPYright © 1990 by The InternatIOnal SOCIety ofOffshOle and Polal Engmeers ISBN 0-96261044-5 ONSET OF CHAOS IN A MULTI-POINT MOORING SYSTEM Oded Gottlieb and Solomon C S rim Department of CIVIl...

... help the deSigner to choose the nght mooring system conftguratlon for a particular range of operations Finally, a Simple method With an acceptable accuracy, can be used directly to estimate the extreme hne tensions and fatigue load effects, excluding the need for extensive time consuming analyses...

... applications has recently led to a revision of the required design procedure specifications (I.S_S.C_, 1988). The well-known quasi-static approach, which has been proven to be a proper design tool for mooring systems in shallow water (AP.I., 1987), has to be modified to account for dynamic tension in deeper...

... order velocity potential in order to precisely evaluate hydro- dynamic forces in irregular waves. Its mooring analysis function cov- ers hIghly nonlinear and complex mooring systems such as a dolphm and rubber fender posihonmg system as well as conventional types of mooring system such as a catenary...