## 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 346

To compare the both results , the low frequency component

subtracted from time series of Fig.4 ( b ) using FFT and inverse FFT method , and

the high frequency component was

To compare the both results , the low frequency component

**shown**in Fig.5 wassubtracted from time series of Fig.4 ( b ) using FFT and inverse FFT method , and

the high frequency component was

**shown**in Fig.6 comparing with the result by ...Page 499

Considering also the stability of such solutions , it was found that stability

required the slope of the damping curve to be positive , see Wu ( 1989 ) or Moe &

Wu ( 1989 ) . In Fig 3 , five such curves are

...

Considering also the stability of such solutions , it was found that stability

required the slope of the damping curve to be positive , see Wu ( 1989 ) or Moe &

Wu ( 1989 ) . In Fig 3 , five such curves are

**shown**. Each represents a given true...

Page 51

For computational purposes it may be convenient to replace the continuous

evolution of X ( 1 ) in the buildup and decay phase by a certain number of

stationary sea states of duration d hours . The profile thus obtained is

-6 in Fig .

For computational purposes it may be convenient to replace the continuous

evolution of X ( 1 ) in the buildup and decay phase by a certain number of

stationary sea states of duration d hours . The profile thus obtained is

**shown**for d-6 in Fig .

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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