Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 14American Society of Mechanical Engineers, 1995 - Arctic regions |
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Page 24
... lift guides during lift - off ; • minimum clearances between the jacket and the SSCV hull and cranes during lift - off ; ⚫ maximum horizontal and vertical loads in the under - leg piles during docking ; ⚫ risk of offloading rigging ...
... lift guides during lift - off ; • minimum clearances between the jacket and the SSCV hull and cranes during lift - off ; ⚫ maximum horizontal and vertical loads in the under - leg piles during docking ; ⚫ risk of offloading rigging ...
Page 229
... Lift - Off Figures 9a - d show the heave , surge , and lift - off for four different wave frequencies ( f = 0.25 , 0.16 , 0.10 , and 0.06 Hz ) , respectively , at the same water depth ( 30.5 m ) . For the highest frequency ( Figure 9a ) ...
... Lift - Off Figures 9a - d show the heave , surge , and lift - off for four different wave frequencies ( f = 0.25 , 0.16 , 0.10 , and 0.06 Hz ) , respectively , at the same water depth ( 30.5 m ) . For the highest frequency ( Figure 9a ) ...
Page 331
... lift forces by a quasi - steady model , is used to evaluate the effects of vortex excitation . The modelled lift forces are used directly as a part of the external forces in the equations of motion . The effects of the vortex excitation ...
... lift forces by a quasi - steady model , is used to evaluate the effects of vortex excitation . The modelled lift forces are used directly as a part of the external forces in the equations of motion . The effects of the vortex excitation ...
Contents
DESIGN OF OFFSHORE STRUCTURES | 1 |
Aarsnes | 11 |
An Analytical Model for Barge Collisions With Rigid Structures | 29 |
Copyright | |
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acceptance criteria added mass ALARP amplitude analysis angle Axial load barge behaviour bending buckling buoy calculated Campos Basin coefficients collision compliant tower components compression computed configuration crack crane vessel curve cycles cyclic cylinder damping damping ratio diameter displacement drilling dynamic effects element equation fatigue function global heave horizontal hydrodynamic installation ISSC TLP joint lift forces linear load kN maximum measured mesh method model test mooring line motion natural frequency nonlinear obtained Ocean Ocean Ranger OMAE operation oscillation parameters platform predicted Quickwave ratio regular waves response riser risk shear simulation specimen spectrum SSCV Statoil steel stiffener stiffness strain stress surface surge tanker tension tension leg platforms transverse tube tubular USFOS values velocity vertical vessel vibration vortex induced vibrations vortex shedding water depth wave forces wave height wave loading wave period weld toe wellhead wind windspeed