Dynamic Analysis of Offshore Structures |
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Page 112
... motion , i.e. wave loading . ( No account is taken in this chapter of the effects of winds and currents on the wave shape and water particle motions . ) See Figure 4.3 . Direction of wave advance Buoyancy FB SWL D ' Fo.Fi Drag inertia ...
... motion , i.e. wave loading . ( No account is taken in this chapter of the effects of winds and currents on the wave shape and water particle motions . ) See Figure 4.3 . Direction of wave advance Buoyancy FB SWL D ' Fo.Fi Drag inertia ...
Page 133
... motion of the cylinder in the direction of the wave motion ; the members would be expected to move in this way in any case , in the absence of vortex shedding . We then have only the scalars r = vx ù to consider , so we write ( 4.31 ) ...
... motion of the cylinder in the direction of the wave motion ; the members would be expected to move in this way in any case , in the absence of vortex shedding . We then have only the scalars r = vx ù to consider , so we write ( 4.31 ) ...
Page 142
... motion of the column , since accelerations are not relative , and the column will feel a body force because of the ground acceleration . We therefore write Mü , for this term , where M is the mass of this section of the column . Hence ...
... motion of the column , since accelerations are not relative , and the column will feel a body force because of the ground acceleration . We therefore write Mü , for this term , where M is the mass of this section of the column . Hence ...
Contents
Introduction | 1 |
Forces on Slender Members | 4 |
Discretisation for Multidegreeof | 8 |
Copyright | |
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Common terms and phrases
acceleration amplitude analysis approximation assume Bessel functions boundary conditions C₁ calculated Chapter circular cylinder coefficients column component Computed consider corresponding cosh kd cosh x(z+d curve damping defined density function depth diagram diffraction diffraction theory direction of wave displacement distribution drag coefficient drag forces dynamic effects exp(iwt fatigue finite element flow fluid Fourier frequency Helmholtz equation Hence Hogben horizontal hydrodynamic incident wave inertia forces interaction JONSWAP lift forces matrix maxima method metres Morison Morison's equation motion number of cycles obtain offshore structures parameter probability probability density function Proc radiation damping random Rayleigh distribution Reynolds number S-N curves scatter diagram sea bed shown in Figure solution spectral density spectrum stationary stress Strouhal surface term variables vector velocity potential vertical vibration vortex shedding wave forces wavelength wavenumber wind speed zero crossing period