## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volumes 1-2American Society of Mechanical Engineers, 1990 - Arctic regions |

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Page 337

The motion equations include non - linear

mooring lines , and the excitation forces are calculated by taking into account the

displaced position of the floating buoy as it oscillates in waves . The non ...

The motion equations include non - linear

**stiffness**characteristics of the catenarymooring lines , and the excitation forces are calculated by taking into account the

displaced position of the floating buoy as it oscillates in waves . The non ...

Page 345

The resulting

tension . Further , Morison's equation is used for estimating the hydrodynamic

load on the riser . Due to the nonlinearity of the drag term appearing in this ...

The resulting

**stiffness**matrix is time dependent due to fluctuations in the riser toptension . Further , Morison's equation is used for estimating the hydrodynamic

load on the riser . Due to the nonlinearity of the drag term appearing in this ...

Page 346

Assuming that only the heave motion of the vessel influences the

system , and that the riser motion can be approximately treated as a lateral

motion in a plane , the equation of motion for the discretized riser system can

then be ...

Assuming that only the heave motion of the vessel influences the

**stiffness**of thesystem , and that the riser motion can be approximately treated as a lateral

motion in a plane , the equation of motion for the discretized riser system can

then be ...

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### Contents

Simulation of Hurricane Seas in a Multidirectional Wave Basin | 17 |

HYDRODYNAMIC FORCES | 47 |

The Force Coefficients on Inclined Cylinder in Random Wave and Current | 57 |

Copyright | |

45 other sections not shown

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### Common terms and phrases

acting added mass amplitude analysis applied array assumed body boundary calculated circular coefficient compared comparison component considered constant corresponding crest cylinder damping defined dependent depth determined direction distribution domain drag drift dynamic effect element elevation Engineering equation estimated experimental experiments expressed Figure flow fluid forward speed frequency function given heave horizontal hydrodynamic increase integral irregular length lift force linear load maximum mean measured method mooring motion nonlinear obtained Offshore oscillation parameters period phase pile plate potential predicted present pressure problem radiation range ratio reference regular waves relative respectively response riser second-order ship shown shown in Fig simulation solution spectra spectrum structure surface surge Table theory velocity vertical vessel wave force wave height wind