基于主梁腹板构型的大型风力机弯扭耦合叶片结构性能研究

王海生; 缪维跑; 张立; 李春; 李志昊

doi:10.19912/j.0254-0096.tynxb.2021-0553

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (3) : 29-38. DOI: 10.19912/j.0254-0096.tynxb.2021-0553

基于主梁腹板构型的大型风力机弯扭耦合叶片结构性能研究

王海生¹, 缪维跑¹, 张立¹, 李春^1,2, 李志昊¹

作者信息 +

RESEARCH ON MAIN GIRDER WEB CONFIGURATION OFBEND-TWIST COUPLING BLADE OF LARGE WIND TURBINE WITH COMPOSITE LAYING

Wang Haisheng¹, Miao Weipao¹, Zhang Li¹, Li Chun^1,2, Li Zhihao¹

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文章历史 +

摘要

为研究主梁腹板偏转对弯扭耦合叶片模态、强度及屈曲特性的影响,以NREL 5 MW风力机叶片为研究对象,基于NX二次开发建立叶片CAD模型,采用CFD方法求解叶片气动载荷并映射至有限元模型进行流固耦合分析。结果表明：弯扭结构耦合叶片各阶固有频率低于传统结构叶片,降幅和减载效果与腹板偏转角有关;压力面主梁向前缘偏转时叶片切应力均小于传统叶片,反向偏转时叶片表面等效应力及应变随偏转角增加而增大;叶片叶尖位移随腹板偏转程度增加而增大;压力面主梁向前缘偏转可提升叶片临界屈曲载荷,反向偏转时各叶片临界屈曲载荷均小于传统结构叶片。

Abstract

In order to explore the effect of web deflection on modal, strength and buckling characteristics of the bend twist coupling blade, Taking the blade of NREL 5 MW wind turbine as the research object, the blade CAD model was established based on the secondary development of NX. The blade surface pressure distribution was obtained by CFD method for fluid-structure coupling analysis. The results show that natural frequencies of the bend-twist coupled blade are lower than the conventional. The blade shear stress is less than the conventional blade when the main beam of pressure surface deflects to the leading edge. Conversely the trend of the equivalent stress and strain on the blade surface is the same with the deflection angle. The effect of decreasing range and unloading reduction of load is related to web deflection; The blade tip displacement increases with the increase of web deflection. The deflection of the main beam on the pressure surface to the leading edge can enhance the critical buckling load of the blade, the critical buckling load of each blade is smaller than that of the conventional structure blade when the reverse deflection is applied.

导出引用

王海生, 缪维跑, 张立, 李春, 李志昊. 基于主梁腹板构型的大型风力机弯扭耦合叶片结构性能研究[J]. 太阳能学报. 2023, 44(3): 29-38 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0553

Wang Haisheng, Miao Weipao, Zhang Li, Li Chun, Li Zhihao. RESEARCH ON MAIN GIRDER WEB CONFIGURATION OFBEND-TWIST COUPLING BLADE OF LARGE WIND TURBINE WITH COMPOSITE LAYING[J]. Acta Energiae Solaris Sinica. 2023, 44(3): 29-38 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0553

中图分类号： TK83

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