DYNAMICRESPONSE OF TOWER STRUCTURE OF OFFSHORE WIND TURBINE UNDER WIND WAVE AND ICE LOAD

Guan Xin; Hua Yu; Liu Bo; Zong Longlong; Kong Dechen; Tang Hao

doi:10.19912/j.0254-0096.tynxb.2024-1711

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (2) : 444-452. DOI: 10.19912/j.0254-0096.tynxb.2024-1711

DYNAMICRESPONSE OF TOWER STRUCTURE OF OFFSHORE WIND TURBINE UNDER WIND WAVE AND ICE LOAD

Guan Xin¹, Hua Yu¹, Liu Bo¹, Zong Longlong¹, Kong Dechen¹, Tang Hao²

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Abstract

The structural dynamic characteristics of offshore wind turbines are directly related to the operational safety and equipment reliability of in-service wind turbines, but because of the complex working environment, a single load analysis cannot reflect the structural dynamic characteristics of its actual operating state. In this paper, considering the distinctive configuration attributes of 5-megawatt marine wind energy generators, Kaimal wind speed spectrum is used to establish a three-dimensional model of Marine turbulent flow field, and Kärnä ice force spectrum is combined to build a floating ice mathematical model, and the working conditions of the actual operating environment of offshore wind turbines are reproduced through the arrangement and combination of multiple working conditions. Combined with OpenFAST and EDEM discrete element analysis method, the dynamic response characteristics of wind turbines under wind, wave and ice loads are studied. The results show that the transverse and longitudinal dispositions of the tower top and the transverse and longitudinal bending moments of the tower are greater than that of the single load, but the cumulative fatigue damage caused by the coupling load is smaller than that of the single load.

Key words

offshore wind power / towers / dynamic response / wind-wave-ice loads / coupling / cumulative damage

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Guan Xin, Hua Yu, Liu Bo, Zong Longlong, Kong Dechen, Tang Hao. DYNAMICRESPONSE OF TOWER STRUCTURE OF OFFSHORE WIND TURBINE UNDER WIND WAVE AND ICE LOAD[J]. Acta Energiae Solaris Sinica. 2026, 47(2): 444-452 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1711

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