## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 13, Parts 1-2American Society of Mechanical Engineers, 1994 - Arctic regions |

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Page 143

( 5 ) • environmental conditions such as data for longterm variation of sea states ,

wave spectrum , and wave energy spreading , • wave load modelling , • structural

modelling , • methods for

( 5 ) • environmental conditions such as data for longterm variation of sea states ,

wave spectrum , and wave energy spreading , • wave load modelling , • structural

modelling , • methods for

**stress**analysis , • fatigue damage model and fatigue ...Page 152

Errors due to ignoring mean

rate of loading ) in the fatigue calculation are also considered to be part of ESN : •

An eigenvalue analysis of the structure is performed to determine mode shapes ...

Errors due to ignoring mean

**stress**, endurance limits , and frequency effects (rate of loading ) in the fatigue calculation are also considered to be part of ESN : •

An eigenvalue analysis of the structure is performed to determine mode shapes ...

Page 162

Failure occurs if the

. K ( C ) > Kic , or the

) > Et ) . Fatigue limit state : The limit state for the fatigue problem is based on ...

Failure occurs if the

**stress**intensity K ( ) exceeds the fracture toughness Kic , i . e. K ( C ) > Kic , or the

**stress**s ( t ) exceeds a critical**stress**threshold Elt ) i . e . s ( t) > Et ) . Fatigue limit state : The limit state for the fatigue problem is based on ...

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### 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 | |

25 other sections not shown

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### Common terms and phrases

amplitude analysis applied approach assessment assumed boundary calculated coefficient compared components considered correlation corresponding cost crack curve cylinder damping depth determined developed direction distribution drag dynamic effects energy Engineering equation estimated expressed extreme factor failure fatigue field Figure flow fluid frequency function given height hydrodynamic important increase initial inspection installation integration interaction joints length lift force limit linear load mass maximum mean measured Mechanics method modes mooring motion nonlinear normal obtained offshore operation oscillation parameters peak performed period phase platform potential predicted present pressure probability problem procedure random range ratio relative reliability represent respectively response risk safety shown shows significant simulation solution statistical stress structure surface Table variables velocity wave wind