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 31
... damping as % of critical damping . Figure 3 depicts this approximation , and Table 1 shows the suggested values for the " input " frequencies ( representing the waves ) and damping ratios in the ranges of interest . to approximate upper ...
... damping as % of critical damping . Figure 3 depicts this approximation , and Table 1 shows the suggested values for the " input " frequencies ( representing the waves ) and damping ratios in the ranges of interest . to approximate upper ...
Page 395
... damping factor is shown in Figure 3. For a damping factor equal to 1 % ( the size of the frequency spacing ) , the estimates have a range of less than 1 % of the exact value . For a damping factor of 2 % ( twice the size of the ...
... damping factor is shown in Figure 3. For a damping factor equal to 1 % ( the size of the frequency spacing ) , the estimates have a range of less than 1 % of the exact value . For a damping factor of 2 % ( twice the size of the ...
Page 409
... damping , and F , is the generalised lift force given by : 44 Fw = √ √ in which -2121-221 16 ( 21 ) FL , ( 21 ) ... damping ratio is composed of three terms B = B , + B - B 、 in which B , is the structural damping , B is the ...
... damping , and F , is the generalised lift force given by : 44 Fw = √ √ in which -2121-221 16 ( 21 ) FL , ( 21 ) ... damping ratio is composed of three terms B = B , + B - B 、 in which B , is the structural damping , B is the ...
Contents
DESIGN OF OFFSHORE STRUCTURES | 1 |
Aarsnes | 11 |
A Novel Design Procedure for Jacket Installations | 19 |
Copyright | |
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acceptance criteria added mass ALARP amplitude analysis angle Axial load barge behaviour bending buckling buoy calculated Campos Basin catastrophe sets coefficients collision compliant tower components computed configuration crack crane crane vessel cycles cyclic cylinder damping damping ratio Designer Wave diameter displacement drilling dynamic effects element equation fatigue flexjoint function global heave horizontal hydrodynamic installation ISSC TLP jacket joint lift lift forces linear load kN maximum measured mesh mode model test mooring line motion natural frequency nonlinear obtained Ocean Ocean Ranger Offshore Technology operation oscillation panel parameters platform predicted Quickwave ratio response riser risk shear simulation specimen SSCV Statoil steel stiffness strain stress surge tanker tension tension leg platform transverse tube tubular USFOS values velocity vertical vessel vibration vortex induced vibrations vortex shedding water depth wave forces wave height wave period weight weld toe wellhead wind windspeed