[关键词]
[摘要]
为研究不同结构漂浮式风力机平台的静动力学响应,基于UG参数化建模的二次开发,建立了OC3-Hywind-Spar平台三维实体模型,采用有限元方法对所建模型进行模态分析,对比各模型固有频率、最大位移量以及最大应力分布情况,并进一步分析其谐响应规律。研究表明:平台的固有频率远离平台服役时所受载荷的对应频率,不会发生共振;平台附加环向筋与纵骨可以有效地降低平台在其各阶振型中的位移量与应力;附加环向筋与纵骨的平台可更好地避免共振发生,其发生较大共振的频率约0.8 Hz,响应值远小于其它结构平台,表明了附加环向筋与纵骨对平台安全性与稳定性有较大提升。
[Key word]
[Abstract]
Platform structure of static and dynamic analysis to avoid floating type wind turbine machine resonance and improve its security has important practical significance. Static and dynamic response of floating platform type wind turbine as the research of different structure, two times the development of UG parametric modeling based on OC3Hywind-Spar platform, established the 3D solid model, using the finite element method for modal analysis of the model, and compares each model's natural frequency, the maximum displacement and maximum stress distribution, and further analyze the harmonic response law, draw the following conclusions: The natural frequency of the platform is far from the corresponding frequency of the load when the platform is in service, resonance will not occur; The additional circumferential reinforcement and longitudinal bone can effectively reduce the displacement and stress of the platform in its various modes; Additional circumferential ribs and longitudinal platform than the other two kinds of structure can better avoid resonance, the larger the resonance frequency of about 0.8 Hz, the response value is far less than other structure platform,show additional circumferential ribs and longitudinal to platform security and stability is greatly improved. The research results provide some theoretical guidance and approach for the design, improvement and construction of offshore wind turbines.
[中图分类号]
TK83
[基金项目]