## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volumes 1-2American Society of Mechanical Engineers, 1991 - Arctic regions |

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Page 319

In order'to ensure that UFEM

stiffness and mass matrices are expressed as sum of changes in structural

components ( 5 , 6 , 25 ) where ( Q ' } is a transformed displacement vector .

In order'to ensure that UFEM

**represents**a real structure , changes in the globalstiffness and mass matrices are expressed as sum of changes in structural

components ( 5 , 6 , 25 ) where ( Q ' } is a transformed displacement vector .

Page 329

the modeled region . radiating bodies either suspended in the fluid or in contact

with the ice can be

the ice canopy while the lower darker area

the modeled region . radiating bodies either suspended in the fluid or in contact

with the ice can be

**represented**. It is this ... The upper lighter section**represents**the ice canopy while the lower darker area

**represents**the fluid . Fig . 5 Total ...Page 501

Here El

the weight of the riser plus content , minus the weight of the displaced water

column . T is the effective tension of the riser , i.e. the axial force in the riser wall ...

Here El

**represents**bending stiffness and w ( z ) , the " wet weight " , is equal tothe weight of the riser plus content , minus the weight of the displaced water

column . T is the effective tension of the riser , i.e. the axial force in the riser wall ...

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### Contents

SPECIAL SESSION HYDRODYNAMICS | 1 |

HYDRODYNAMIC FORCES | 29 |

SECONDORDER EFFECTS | 113 |

Copyright | |

47 other sections not shown

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### Common terms and phrases

acting amplitude analysis angle applied approach approximately assumed average body boundary cable calculated circular cylinder coefficients compared comparison components computed considered constant corresponding cylinder damping depth described determined diffraction direction distribution domain drag drift force effect element Engineering equation estimates experimental experiments expressed field Figure floating flow fluid follows free surface frequency function given height horizontal hydrodynamic incident included increase integral irregular waves length lift force linear loads mass maximum mean measured method mode mooring motion natural nonlinear obtained Ocean Offshore oscillation period phase platform points position potential predicted present pressure problem random range regular relative represents respectively response second order second-order separation ship shown shows simulation solution spectrum structure surge Table tests theory values velocity vertical vortex wave forces