Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volumes 1-2American Society of Mechanical Engineers, 1992 - Arctic regions |
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Page 82
... ratio , the inertia coefficient is found to have reduced by about 40 % at the corresponding KC numbers as the aspect ratio H / D increases from 1 to 2 ( compare Figures 3 and 7 ) . When the aspect ratio H / D reduces from 1 to 0.5 the ...
... ratio , the inertia coefficient is found to have reduced by about 40 % at the corresponding KC numbers as the aspect ratio H / D increases from 1 to 2 ( compare Figures 3 and 7 ) . When the aspect ratio H / D reduces from 1 to 0.5 the ...
Page 225
... ratio is : λ с = C - 2006 - 278 , Cr 2л ( 12 ) where the natural frequency wo is assumed equal to the undamped natural frequency . For a linear system the damping ratio is independent of the motion amplitude , For the Coulomb and ...
... ratio is : λ с = C - 2006 - 278 , Cr 2л ( 12 ) where the natural frequency wo is assumed equal to the undamped natural frequency . For a linear system the damping ratio is independent of the motion amplitude , For the Coulomb and ...
Page 303
... ratio can also be expressed as modal damping ratio , n , as the percentage of the critical damping , which is used in association with viscous damping model . The relation between the logarithmic decrement & n and the damping ratio n is ...
... ratio can also be expressed as modal damping ratio , n , as the percentage of the critical damping , which is used in association with viscous damping model . The relation between the logarithmic decrement & n and the damping ratio n is ...
Contents
OCEAN WAVES AND CURRENT | 1 |
HYDRODYNAMIC FORCES | 69 |
17 | 90 |
Copyright | |
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added mass amplitude analysis axial behaviour boundary bubble buoy cable calculated Campos Basin coefficients compliant tower components configuration crane vessels cylinder damping model damping ratio developed direction displacement distribution domain drag coefficient drag force dynamic response effect Engineering equation estimated experimental Figure floating flow fluid heave motion hydrodynamic hydrodynamic damping installation interaction internal wave irregular waves Karunakaran length linear load matrix measured method modal mode model testing module natural frequency natural period nondimensional nonlinear obtained Ocean Offshore Structures operations oscillation parameters peak pipe pipeline platform pontoon potential predicted pressure ratio Rayleigh Rayleigh distribution resonant riser rotation second-order semisubmersible ship shown simulation spectra spectrum stiffness Stirling engine subsea surge tank technique tendon tension tethers transfer function values vector velocity velocity potential vertical vessel vibration water depth wave force wave height wave period