## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 1; Volume 7, Part 1American Society of Mechanical Engineers, 1988 - Arctic regions |

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Page 305

A method is proposed to extract the mass , damping , and stiffness

A method is proposed to extract the mass , damping , and stiffness

**matrices**of structures from the estimated modal ... i ui qi : Discrete system eigen values : Tower eigen vectors : Complex modal vectors : Complex modal**matrix**: Eigen ...Page 307

-1 a is the unit delay operator , and Hij , j = 1,2 , ... , n are the elements of the ith column hi of the nxq

-1 a is the unit delay operator , and Hij , j = 1,2 , ... , n are the elements of the ith column hi of the nxq

**matrix**H defined by ( 9 ) A method is described in ( 4 ) by which the complex eigen vectors ( columns of the modal**matrix**) ...Page 308

Pad Using this definition of the complex modal

Pad Using this definition of the complex modal

**matrix**, equations ( 18 ) can be written compactly as à ( k - 1 ) = t ; ( k + 1 ) = tf ( ) - ARIJ Ez ( K ) , r1 ( k - 1 ) r ( k - 1 ) r ( k - 1 ) = ( yo ( k + n - 1 ) , yo ( k + n - 2 ) ...### What people are saying - Write a review

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### Contents

FLOATING PRODUCTION SYSTEMS | 1 |

Early Production Systems in the North | 31 |

Dynamic Motions and Mooring Line Dynamics of the Veslefrikk Floating Production System | 49 |

Copyright | |

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### Common terms and phrases

analysis angle applied assumed axial bending cable calculated coefficient components Conference connection considered cost curve depth determined developed diameter direction displacement distribution drag dynamic effect element energy Engineering equation equipment estimated extreme factor fatigue field Figure flow force frequency function given important included increase installation International length limit linear load lower marine mass material matrix maximum mean measured Mechanics method mode mooring motion natural normal obtained Offshore operation parameters performed period pile pipe platform position predicted presented pressure problem production range ratio response riser rope shear shown shows significant soil solution static stiffness strength stress structure surface Table Technology tension tower vane vertical vessel wave weight wire