Study on Nonlinear Motion Behavior of Coupled Heave-Pitch for the Classic Spar Platform Based on AQWA

Song Sang; Yuan Zhou; Xue Liang Jiang

doi:10.4028/www.scientific.net/AMM.170-173.2170

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 170-173Study on Nonlinear Motion Behavior of Coupled...

Study on Nonlinear Motion Behavior of Coupled Heave-Pitch for the Classic Spar Platform Based on AQWA

Abstract:

This paper used AQWA software to research the nonlinear motion characteristic of heave-pitch coupling of classical Spar platform in regular waves. With classic Spar platform as an example, the wave amplitude and periodic changes’ effect to the nonlinear motion behavior of coupled heave-pitch is researched. After calculation, the critical periods corresponding to the different incident wave amplitude are obtained, based which, gets the instability parameter domain of coupling resonance of platform in the wave period-amplitude plane. The results in this paper show that the heave-pitch coupled resonance of platform depends on the wave amplitude and the ratio of the natural period of heave and pitch, and the incident wave period.

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Periodical:

Applied Mechanics and Materials (Volumes 170-173)

Pages:

2170-2174

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.170-173.2170

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Online since:

May 2012

Authors:

Song Sang, Yuan Zhou, Xue Liang Jiang

Keywords:

AQWA, Coupled Heave and Pitch Motion, Coupled Time-Domain Analysis, Spar Platform, Wave Loads

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References

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