## 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 52

It may be noted that as the number of maxima N increases , the expected value of increases and the

It may be noted that as the number of maxima N increases , the expected value of increases and the

**standard**deviation decreases , as expected for the extreme type I distribution . The p.d.f. of extreme of maxima 2 has been normalized ...Page 59

Statistically the upper limit is interpreted as the mean value plus two

Statistically the upper limit is interpreted as the mean value plus two

**standard**deviations corresponding to a probability of exceedence of 0.023 . Correspondingly the lower limit is determined . The stochastic model for the total ...Page 68

It is assumed that the

It is assumed that the

**standard**deviation is 30 MPa ( this presupposes good quality control and a detailed material specification ) . The yield strength oy is modelled as a lognormal variable with mean = 482+ ( 2 x 30 ) – 15 = 527 MPa ...### 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 | |

15 other sections not shown

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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