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 151
... excitation at top 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 5.0 10.0 15.0 Frequency of excitation at top ( rad / sec ) Fig.4 Comparison of simulation and experiment in horizontal excitation at top ( model - 2 , x = 0.8m ) . 10 ...
... excitation at top 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 5.0 10.0 15.0 Frequency of excitation at top ( rad / sec ) Fig.4 Comparison of simulation and experiment in horizontal excitation at top ( model - 2 , x = 0.8m ) . 10 ...
Page 152
... Excitation frequency is 14rad / sec and observation position_is_x = 0.85 . The response is gradually built up and reaches larger value . Interesting thing is that frequency of lateral response is same to the axial excitation during the ...
... Excitation frequency is 14rad / sec and observation position_is_x = 0.85 . The response is gradually built up and reaches larger value . Interesting thing is that frequency of lateral response is same to the axial excitation during the ...
Page 153
... excitation frequencies on the stability chart . The riser is 4000m long and axial excitation amplitude applied at the top of riser was 1m . The plots show that riser goes into unstable region at excitation around 0.6 rad / sec , and ...
... excitation frequencies on the stability chart . The riser is 4000m long and axial excitation amplitude applied at the top of riser was 1m . The plots show that riser goes into unstable region at excitation around 0.6 rad / sec , and ...
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amplitude analysis ASME axial barge caisson calculated Campos Basin catenary coefficient comparison computed Conference on Offshore configuration Copyright damping deck diameter diffraction displacement draft drag drag coefficient dynamic effect equations Figure finite element flow fluid force FPSO frequency domain heave hot spot stress hull hydrodynamic installation interaction jacket kips linear load load transfer located longitudinal maximum measured Mechanics and Arctic method mode model test Model-I mooring lines mooring system motion nonlinear numerical obtained Offshore Mechanics offshore structures parameters peak performed Petrobras pipe platform polyester predicted pressure ratio Rayleigh distribution response Reynolds number riser Riser Tensioning S-N curve seastates shear shown in Fig simulation soil spectral spectrum spudcan steel stiffness subsea Table transverse upstream cylinder values velocity velocity potential vertical vessel vibration vortex vortex induced vibrations water depth wave height Weibull distribution Y Force