Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts 1-2American Society of Mechanical Engineers, 2004 - Arctic regions |
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Page 25
... mode for the in - plane direction has a node near the bottom of the riser , while the first out - of - plane modes has no node . Mode shapes and frequencies tends to become independent of direction as mode number increases . The ...
... mode for the in - plane direction has a node near the bottom of the riser , while the first out - of - plane modes has no node . Mode shapes and frequencies tends to become independent of direction as mode number increases . The ...
Page 26
... mode 15 . - Three directions of current will be studied ( Fig . 1b ) : 0 ° current , perpendicular to the SCR , the ... mode while the 90 ° current induces a peak matching the third in - plane mode . The lesser peaks lead to the same ...
... mode 15 . - Three directions of current will be studied ( Fig . 1b ) : 0 ° current , perpendicular to the SCR , the ... mode while the 90 ° current induces a peak matching the third in - plane mode . The lesser peaks lead to the same ...
Page 56
... Mode 2nd Mode 3rd Mode ( Base case ) +15 m 1.4 m / s +10 m 1.2 m / s Dry +15 m 0.75871 0.90959 1.5208 0.74466 0.90002 1.3786 Pinned supported +5 m 1.0 m / s +10 m 0.74976 0.90491 1.3787 S.W.L. 0.96 m / s +5 m 0.75291 0.90684 1.3818 ...
... Mode 2nd Mode 3rd Mode ( Base case ) +15 m 1.4 m / s +10 m 1.2 m / s Dry +15 m 0.75871 0.90959 1.5208 0.74466 0.90002 1.3786 Pinned supported +5 m 1.0 m / s +10 m 0.74976 0.90491 1.3787 S.W.L. 0.96 m / s +5 m 0.75291 0.90684 1.3818 ...
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amplitude analysis ASME axial barge caisson calculated Campos Basin catenary coefficient comparison computed Conference on Offshore configuration Copyright damping deck diameter diffraction displacement draft drag drag coefficient dynamic effect equations Figure finite element flow fluid force FPSO frequency domain heave hot spot stress hull hydrodynamic installation interaction jacket kips linear load load transfer located longitudinal maximum measured Mechanics and Arctic method mode model test Model-I mooring lines mooring system motion nonlinear numerical obtained Offshore Mechanics offshore structures parameters peak performed Petrobras pipe platform polyester predicted pressure ratio Rayleigh distribution response Reynolds number riser Riser Tensioning S-N curve seastates shear shown in Fig simulation soil spectral spectrum spudcan steel stiffness subsea Table transverse upstream cylinder values velocity velocity potential vertical vessel vibration vortex vortex induced vibrations water depth wave height Weibull distribution Y Force