Dynamic responses of a new type of multi floating platform under the coupling effect of wind and wave

WANG Bo1,DING Qinwei2,LI Chun1,3,ZHANG Li1,HAN Zhiwei1

Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (22) : 194-202.

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PDF(1940 KB)
Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (22) : 194-202.

Dynamic responses of a new type of multi floating platform under the coupling effect of wind and wave

  • WANG Bo1,DING Qinwei2,LI Chun1,3,ZHANG Li1,HAN Zhiwei1
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Abstract

In order to improve the stability of the platform, a new multi-floating platform based on the Spar platform is proposed. Fortran programming is used to realize the integration with AeroDyn through the AQWA reserved interface. Based on the radiation / diffraction theory and combined with the finite element method, the dynamic response characteristics of the new platform and the Spar platform under the coupling effects of wind and wave are compared and analyzed. The results show that: the heave and pitch response amplitude operator of the new platform decrease significantly except that the surge response amplitude operator is slightly larger than that of the Spar; the first-order wave excitation force / torque on the two platforms varies with frequency roughly the same, and the first-order wave excitation force / torque in the surge and pitch directions of the new platform are smaller than that of the Spar. In the time domain analysis, compared with the Spar, the pitch and yaw responses of the new platform are smaller than those of the Spar except that the surge response is larger than that of the Spar, and the pitch response decreases the most, followed by the yaw response; in the power spectrum density analysis, the response spectrum peak value of the new platform in surge, pitch and yaw are smaller than those of the Spar.

Key words

coupling effects of wind and wave / new multi floating platform / Spar / motion response / stability

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WANG Bo1,DING Qinwei2,LI Chun1,3,ZHANG Li1,HAN Zhiwei1. Dynamic responses of a new type of multi floating platform under the coupling effect of wind and wave[J]. Journal of Vibration and Shock, 2021, 40(22): 194-202

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