STUDY OF DIFFERENT APERTURE PATTERNS ON PROTECTIVE PERFORMANCE OF OFFSHORE WIND TURBINE FRACTAL PROTECTIVE DEVICES

Yue Minnan; Su Huanhuan; Liu Kunpeng; Fan Li; Li Chun; Yang Mei

doi:10.19912/j.0254-0096.tynxb.2025-0357

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (7) : 136-143. DOI: 10.19912/j.0254-0096.tynxb.2025-0357

STUDY OF DIFFERENT APERTURE PATTERNS ON PROTECTIVE PERFORMANCE OF OFFSHORE WIND TURBINE FRACTAL PROTECTIVE DEVICES

Yue Minnan¹, Su Huanhuan¹, Liu Kunpeng¹, Fan Li¹, Li Chun^1,2, Yang Mei³

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Abstract

To investigate the influence of different aperture patterns on the protective performance of fractal aperture proteective devices for offshore wind turbines, in this paper, the collision process between a 5000 t ship and a 4 MW single-column three-pile foundation offshore wind turbine at a speed of 2 m/s is simulated by using LS-DYNA software based on nonlinear dynamics theory. Through the analysis of indicators such as kinetic energy dissipation, contact force, system damage, and tower top dynamic response, the following conclusions are drawn： the traditional triangular aperture protective device exhibites the lowest kinetic energy dissipation rate, while the rectangular aperture device demonstrates the highest rate; under the protection of the three devices, the tower structure incurred a certain degree of plastic deformation, with the triangular aperture causing the least plastic strain and the rectangular aperture causing the highest; concerning tower top dynamic response, the triangular and circular aperture devices showe similar overall values, but the maximum response of the triangular aperture is slightly lower than that of the circular aperture, while the dynamic response of the rectangular aperture is comparatively more pronounced. The fractal protective device with a triangular aperture pattern delivers the best comprehensive protective performance, offering a higher level of safety assurance.

Key words

offshore wind turbines / collision / protective devices / fractal / ship

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Yue Minnan, Su Huanhuan, Liu Kunpeng, Fan Li, Li Chun, Yang Mei. STUDY OF DIFFERENT APERTURE PATTERNS ON PROTECTIVE PERFORMANCE OF OFFSHORE WIND TURBINE FRACTAL PROTECTIVE DEVICES[J]. Acta Energiae Solaris Sinica. 2026, 47(7): 136-143 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0357

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