Proceedings of the ... International Conference on Offshore Mechanics and Arctic EngineeringAmerican Society of Mechanical Engineers, 1994 - Arctic regions |
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Page 411
... modes , 95 % mass participation was achieved in the horizontal directions and only 70 % mass participation was achieved in the vertical direction . DISCUSSION OF RESULTS Frequencies and Mode Shapes The derrick portion of the rig is ...
... modes , 95 % mass participation was achieved in the horizontal directions and only 70 % mass participation was achieved in the vertical direction . DISCUSSION OF RESULTS Frequencies and Mode Shapes The derrick portion of the rig is ...
Page 471
... mode shapes of damaged structural system can be estimated in terms of the natural frequencies and mode shapes of the undamaged structural system . This paper is devoted to introduce formulations of the stiffness and mass matrices as ...
... mode shapes of damaged structural system can be estimated in terms of the natural frequencies and mode shapes of the undamaged structural system . This paper is devoted to introduce formulations of the stiffness and mass matrices as ...
Page 474
... mode shapes of the undamaged structure as a first approximation . Let assume a natural mode vector of the undamaged structure as { } ; . Then , the generalized stiffness and mass will be calculated from , k ; ' = { • ) , ( [ K ] – [ AK ] ...
... mode shapes of the undamaged structure as a first approximation . Let assume a natural mode vector of the undamaged structure as { } ; . Then , the generalized stiffness and mass will be calculated from , k ; ' = { • ) , ( [ K ] – [ AK ] ...
Contents
OCEAN WAVES AND ENERGY | 1 |
Load Control Method and Its Realization on an OWC Wave Power Converter | 19 |
Nonlinearity in CrestTrough Statistics of Bretschneider Seas | 27 |
Copyright | |
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added mass amplitude analysis ASME boundary conditions buoy calculated Circular Cylinder compliant tower components correlation length curve deck diameter diffraction dimensionless drag coefficient drag force drift force dynamic effects Engineering envelope equation experimental Figure fluid Fluid Mechanics free surface heave Hilbert transform horizontal hydrodynamic hydrodynamic force incident wave increase installation interaction irregular waves lift coefficient lift force linear load control lock-in matrix maximum measured method model tests modes mooring line nonlinear obtained Ocean Offshore Technology OMAE oscillating cylinder parameters peak phase pipe platform predicted present pressure problem quadratic Quickwave random ratio response Reynolds number riser seastate second-order shear shedding frequency shown simulation solution spectral spectrum stationary cylinder stiffeners Strouhal Strouhal number transfer function transverse turbulence uniform flow values velocity potential vertical vibration vortex shedding water depth Wave Force wave frequency wave power