Heave suppression of semi-submersible platform with tuned heave plate containing inerter

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (11) : 129-138.

VIBRATION THEORY AND INTERDISCIPLINARY RESEARCH

Heave suppression of semi-submersible platform with tuned heave plate containing inerter

TANG Xue1,2, HAN Shichang*1,2, SHI Yiwei1,2

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Abstract

To mitigate the unsteady heave response of the semi-submersible platform (SSP) for floating wind turbines under wave-induced forces, based on the principle of tuned mass damper, the influence of tuned heave plate (THP) structure after adding an inerter on the heave response of semi-submersible platform was studied. The dynamic model of the SSP with tuned heave plate inerter (THPI-SSP) is developed, and its optimal design parameters for the THPI system are determined using the root mean square value of the heave motion as the evaluation criterion. A comparative analysis is then performed, contrasting the heave response of the THPI-SSP with that of the SSP, SSP with fixed heave plate, and SSP with THP under four distinct sea conditions. The results show that under the four sea conditions, the THPI has the best effect on mitigating the heave motion of the floating wind turbine semi-submersible platform, that is, the introduction of the inerter-based device is helpful to mitigate the heave motion of the semi-submersible platform.

Key words

semi-submersible platform / tuned heave plate / inerter / heave motion mitigation

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TANG Xue1, 2, HAN Shichang1, 2, SHI Yiwei1, 2. Heave suppression of semi-submersible platform with tuned heave plate containing inerter[J]. Journal of Vibration and Shock, 2025, 44(11): 129-138

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