## 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 442

Use of higher

member thicknesses are governed by stresses ; only approximately 5 % of the

elements have the minimum thickness required for construction purposes .

Use of higher

**grade**concrete would lead to lighter structures , as most of themember thicknesses are governed by stresses ; only approximately 5 % of the

elements have the minimum thickness required for construction purposes .

Page 582

Steel

1983 ,. conditions No. 10 Hz 20 Hz 30 Hz 40 Hz 50 Hz Fixed 1.0 D = 219.1mm

1.03 1.03 1.11 1.12 1.32 1.33 1.86 1.93 5.53 6.87 Fixed / fixed t = 8.2 mm 1.31

1.32 ...

Steel

**grade**Load frequency Support ends Alternative Hogan , T.J. , Firkins , A. ,1983 ,. conditions No. 10 Hz 20 Hz 30 Hz 40 Hz 50 Hz Fixed 1.0 D = 219.1mm

1.03 1.03 1.11 1.12 1.32 1.33 1.86 1.93 5.53 6.87 Fixed / fixed t = 8.2 mm 1.31

1.32 ...

Page 258

For

with a mean value of 385 N / mm2 and a standard deviation of 25 N / mm2 ( c.o.v.

[ 00 ] = 0.065 ) . This corresponds to a specified characteristic value of 345 N ...

For

**Grade**50 steel it was found that a lognormal distribution could be adoptedwith a mean value of 385 N / mm2 and a standard deviation of 25 N / mm2 ( c.o.v.

[ 00 ] = 0.065 ) . This corresponds to a specified characteristic value of 345 N ...

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### Contents

CONTENTS | 131 |

High Frequency Hydrodynamic Damping of a TLP | 147 |

A Comparison of Results | 153 |

Copyright | |

50 other sections not shown

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acceleration added amplitude analysis angle applied approach approximately assumed body boundary cable calculated coefficients compared components computed considered constant coordinate corresponding cylinder damping depth determined developed diffraction direction displacement distribution domain drag drift dynamic effect element Engineering equation estimated experimental experiments expressed field Figure floating flow fluid force free surface frequency function given height hydrodynamic included increase integral length lift force linear load mass maximum mean measured Mechanics method mode mooring motion natural nonlinear obtained Offshore operation oscillation period phase pile platform position potential predicted present pressure problem production range ratio relative represents respectively response second-order separation ship shown shows simulation solution stiffness structure surface surge Table Technology tension tests theory values velocity vertical vessel wave