TOPOLOGY OPTIMIZATION METHODOLOGY ON MULTI-JACKET STRUCTURE FOR OFFSHORE WIND TURBINE

Zhang Chengwan; Zhang Jinhua; Long Kai; Lu Feiyu; Tao Tao

doi:10.19912/j.0254-0096.tynxb.2022-0634

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (6) : 495-500. DOI: 10.19912/j.0254-0096.tynxb.2022-0634

TOPOLOGY OPTIMIZATION METHODOLOGY ON MULTI-JACKET STRUCTURE FOR OFFSHORE WIND TURBINE

Zhang Chengwan¹, Zhang Jinhua^1,2, Long Kai¹, Lu Feiyu¹, Tao Tao^1,3

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Abstract

To realize the conceptual design of multi-jacket structure for offshore wind turbine （OWT）, modal analysis, load calculation, stiffness and strength study of in extreme working conditions were conducted for a 5 MW multi-jacket structure were conducted.. Based on its mechanical behavior, a multi-objective topology optimization （TO） formulationmodel for multi-jacket structure was proposed, by suppressing checkerboard patterns by imposing a minimum size restriction and adopting plane symmetry constraints. Thus the TO results by varying weighted with different weight factors were obtained. In terms of topological configuration under a specified weighted factor, the finite element model of a novel multi-jacket structure was providedre-established and load calculation was reanalyzed. By comparing the static and dynamic analysis results under ultimate loading cases, it can be observed that the first-order natural frequency of the optimized structure is slightly enhanced. Simultaneously, the maximum deformation and stress wereare greatly reduced. These results clearly confirmedconfirm the viability and superiority of the suggested TO procedure in the multi-jacket design of OWTs.

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offshore wind turbines / structural optimization / multi-objective optimization / maximum deformation

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Zhang Chengwan, Zhang Jinhua, Long Kai, Lu Feiyu, Tao Tao. TOPOLOGY OPTIMIZATION METHODOLOGY ON MULTI-JACKET STRUCTURE FOR OFFSHORE WIND TURBINE[J]. Acta Energiae Solaris Sinica. 2023, 44(6): 495-500 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0634

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