考虑重力、离心力、气动力作用下的叶片结构性能变化,以5 MW风力机叶片为优化目标,基于经典层合板理论建立风力机叶片优化数学模型,将各层合板界面最大Von_Mises应力作为优化目标,最大叶尖位移作为优化约束,层合板纤维铺设角度作为优化变量,对比分析3种方案下的叶尖位移、最大应力、Tsai_Wu失效因子,确定最佳铺层方案。优化后叶尖位移、最大Von_Mises应力、Tsai_Wu失效因子明显降低,验证优化方法的有效性。
Abstract
The structural performance changes for blades under gravity, centrifugal force and aerodynamic force were considered, and 5 MW wind turbine blades were considered optimisation targets. A mathematical model for wind turbine blade optimisation was developed based on the classical laminate theory. The maximum stress at the laminate interface, maximum blade top displacement and laminate fibre angle were considered the optimisation objective, constraint variable and design variable, respectively. Then, the maximum displacement, Von_Mises stress and Tsai_Wu failure factor were compared and analyzed, and the best scheme was determined. The optimisation substantially reduced the tip displacement, maximum Von_Mises stress and Tsai_Wu failure factor, verifying the effectiveness of the optimisation method.
关键词
风力机叶片 /
结构性能 /
复合材料 /
优化 /
铺层参数
Key words
wind turbine blades /
structural properties /
composite materials /
optimization /
lamination parameter
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基金
安徽省科技厅自然科学基金面上项目（1908085ME166）; 安徽省教育厅协同创新项目（GXXT-2019-010）; 安徽省中央引导地方科技发展资金项目（202007d08050022）
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