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 ) ...
... 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 ) ...
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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2DOF amplitude analysis ASME axial barge caisson calculated Campos Basin catenary coefficient computed Conference on Offshore configuration contour line convergence Copyright curve damping deck density diameter displacement distribution drag coefficient dynamic effects equation excitation experimental extrapolation Figure flow fluid force FPSO free surface frequency domain Guide Load heave hot spot stress hull hydrodynamic installation jacket kips lift coefficient linear load transfer located longitudinal maximum measured Mechanics and Arctic mesh refinement method mode model test moon pool mooring lines mooring system motion noise nonlinear obtained Offshore Mechanics operation parameters peak Petrobras pipe platform polyester polyester rope Predicted pressure random waves ratio response Reynolds number riser roll S-N curve seastates shear soil spectral spudcan steel stiffness structure Table tension transverse upstream cylinder velocity velocity potential vertical vessel vibration vortex water depth wave height Weibull distribution weld