## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 9, Part 2American Society of Mechanical Engineers, 1990 - Arctic regions |

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Page 134

( 15 ) The

( 15 ) The

**relative**velocity vector v ( t ) is defined as And the second - order coefficient matrix is v ( t ) sVx ( t ) - Ux ] lvy ( t ) - Uy } ' ( 7 ) 0 C [ 20 ] 0 4 and the second - order**relative**velocity vector v [ 2 ] ( t ) is ...Page 136

Hence , the

Hence , the

**relative**velocities at a point ( 11,12,2 ) in the splash zone is the same as the**relative**velocity at the mean water level . Therefore , the integral of Eq . ( 33 ) becomes Matrix Form of Drag Force Expansion Substituting ...Page 138

11 ( 1 ) - # 127 ( 1 ) , ( 48 ) The preceding approximation involving the replacement of the

11 ( 1 ) - # 127 ( 1 ) , ( 48 ) The preceding approximation involving the replacement of the

**relative**velocity v ( t ) by its wave - frequency component w ( t ) in the formulation of the second - order viscous forces can significantly ...### What people are saying - Write a review

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### Contents

Investigation of the Ergodicity Assumption for Sea States in the Reliability Assessment of Offshore | 1 |

OFFSHORE TECHNOLOGY PART | 33 |

Extreme Forces on Large AxiSymmetric Offshore Structures in Directional Seas | 49 |

Copyright | |

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### Common terms and phrases

analysis applied approach approximately assessment assumed average basic calculated coefficient component computed considered constant corresponding cost crack growth curve cycles damage defect density depends depth derived described determined developed deviation distribution drag effects Engineering equation equivalent estimated evaluated example expected extreme factor failure failure probability fatigue Figure force fracture frequency function geometry given important included increase indicated initial inspection integration joints limit linear load Lognormal material maximum mean measured mechanics method normal obtained offshore structures operation parameters performed period platform predicted present pressure probabilistic probability procedure random variable range ratio reference relative reliability represent requirements respectively response risk safety sensitivity shown shows significant simulation standard statistical storm strength stress structure surface Table tension tether tubular uncertainty variables variation wave wave height weld