Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 2American Society of Mechanical Engineers, 2001 - Arctic regions |
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Page 384
... vessel - riser system is shown in Figure 1 . In order to implement riser response criteria within a dynamic positioning control loop , a description of the presently operating control schemes is first required . Such control schemes are ...
... vessel - riser system is shown in Figure 1 . In order to implement riser response criteria within a dynamic positioning control loop , a description of the presently operating control schemes is first required . Such control schemes are ...
Page 386
... vessel to follow . The optimal position of the vessel , opt , can be computed by taking the riser angle criteria into account , based on the measured values of the angles at any time . However , the vessel can not be moved to the ...
... vessel to follow . The optimal position of the vessel , opt , can be computed by taking the riser angle criteria into account , based on the measured values of the angles at any time . However , the vessel can not be moved to the ...
Page 389
... vessel motion . Response angle in degrees ( left ) and dynamic amplification factor ( max dynamic / static ) to the right , Chen ( 2001 ) Angle DAF for Lower angle Figure 5. Dynamic response of riser top angle to low - frequency vessel ...
... vessel motion . Response angle in degrees ( left ) and dynamic amplification factor ( max dynamic / static ) to the right , Chen ( 2001 ) Angle DAF for Lower angle Figure 5. Dynamic response of riser top angle to low - frequency vessel ...
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amplitude applied approach Arctic Engineering assessment Bay of Campeche calculated coefficient components Conference on Offshore considered corrosion cost crack growth criteria damage deck defect distribution dynamic effect element equation estimate evaluated evidential reasoning approach factor fatigue Figure FPSO frequency function fuzzy given Guedes Soares hydrostatic test inspection planning installation jack-up linear maintenance marine maximum Mechanics and Arctic method monopod nonlinear North West Shelf obtained Offshore Mechanics offshore structures operations optimal parameters peak pipe pipeline prediction probabilistic probability density probability density function probability of failure procedure random variables reliability analysis reliability index response return period Rio de Janeiro riser risk risk based inspection safety seismic ship significant wave height simulation spectral spectrum statistical steel storm stress structural reliability subsea surface Table temperature theory ultimate strength uncertainty valves velocity water depth Weibull distribution wind