## 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 148

The tests were repeated by replacing the spring to examine the effect of heave

The tests were repeated by replacing the spring to examine the effect of heave

**natural**periods on the hydrodynamic damping . sets The authors tested a vertical caisson for heave damping ( Chakrabarti and Hanna ( 1990 ) ] in still water ...Page 301

Sub - harmonic excitation can result when the incident wave frequency is at integral multiples of the

Sub - harmonic excitation can result when the incident wave frequency is at integral multiples of the

**natural**frequency of the cylinder concerned ( ie excitation occurs at the**natural**frequency which is below that of the forcing ...Page 467

Pluck Test The pluck test is a common test which uses the initial displacement method to determine the

Pluck Test The pluck test is a common test which uses the initial displacement method to determine the

**natural**frequencies and the damping ratios of the structure . The structure was initially deformed by pulling it with a thread ( and ...### What people are saying - Write a review

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### Contents

SPECIAL SESSION HYDRODYNAMICS | 1 |

HYDRODYNAMIC FORCES | 29 |

Simulated High Reynolds Number Flow and Forces on Cylinder Groups | 71 |

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 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