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 Dry 0.75871 0.90959 1.5208 +10 m 1.2 m / s +15 m 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 Dry 0.75871 0.90959 1.5208 +10 m 1.2 m / s +15 m 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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2DOF amplitude analysis ASME axial barge caisson calculated Campos Basin catenary coefficient computed Conference on Offshore configuration contour line convergence Copyright curve damping deck density diameter displacement distribution drag coefficient dynamic effects equation excitation experimental extrapolation Figure flow fluid force FPSO free surface frequency domain Guide Load heave hot spot stress hull hydrodynamic installation jacket kips lift coefficient linear load transfer located longitudinal maximum measured Mechanics and Arctic mesh refinement method mode model test moon pool mooring lines mooring system motion noise nonlinear obtained Offshore Mechanics operation parameters peak Petrobras pipe platform polyester polyester rope Predicted pressure random waves ratio response Reynolds number riser roll S-N curve seastates shear soil spectral spudcan steel stiffness structure Table tension transverse upstream cylinder velocity velocity potential vertical vessel vibration vortex water depth wave height Weibull distribution weld