## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 9American Society of Mechanical Engineers, 1990 - Arctic regions |

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Page 313

The wind tunnel data for Lift and

polynominals describing the self - excited wind forces . This paper treats the

problem as one degreemof - freedom in acrosswind direction , assuming that

along wind ...

The wind tunnel data for Lift and

**Drag**coefficients are used to generatepolynominals describing the self - excited wind forces . This paper treats the

problem as one degreemof - freedom in acrosswind direction , assuming that

along wind ...

Page 373

For example , the distributed normal

- of - plane geometric stiffness . The subsegment results must be transformed to

the global coordinate system to be combined with the results for all subsegments

...

For example , the distributed normal

**drag**force is given by where 1 / fz2 is the out- of - plane geometric stiffness . The subsegment results must be transformed to

the global coordinate system to be combined with the results for all subsegments

...

Page 385

NOMENCLATURE When doing numerical analysis of the hydrodynamic loads

and motions of flexible risors the choice of

item . The choice becomes particularly difficult if the riser has lumped buoyancy ...

NOMENCLATURE When doing numerical analysis of the hydrodynamic loads

and motions of flexible risors the choice of

**drag**and mass coefficients is a criticalitem . The choice becomes particularly difficult if the riser has lumped buoyancy ...

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### Contents

Identification of NonLinear Effects in Predicting the Motion Response of Mobile Platforms | 337 |

RISERSMOORINGSCABLES | 345 |

HYDRODYNAMIC FORCES | 347 |

Copyright | |

13 other sections not shown

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### Common terms and phrases

alternative amplitude analysis applied approach array axial barge bending brace buoyancy cable calculated coefficient combination compared configuration considered corresponding curvature curve damage damping defined deflection determined developed direction displacement distribution drag dynamic effects elements Engineering environmental equation estimated extreme factor fatigue Figure flexible riser flow force frequency function given height important increase indicate installation length linear load marine mass matrix maximum mean measured method mode mooring motion natural nonlinear normal obtained offshore operation parameters performed period phase pile platform position predicted present problem production relative represent respectively response riser rotating selection shown shows simulation soil solution static stiffness storage strain stress structure surface Table tension tests values vertical vessel water depth wave wind