风电叶片后缘疲劳加载设备摇臂支架结构优化设计  

Structural optimization design of rocker bracket for wind turbine blade trailing edge fatigue loading equipment

作　　者：何光男 袁光明[1] 王景华 黄雪梅[1] 张磊安[1] He Guangnan;Yuan Guangming;Wang Jinghua;Huang Xuemei;Zhang Leian(College of Mechanical Engineering,Shandong University of technology,Zibo 255049,China)

机构地区：[1]山东理工大学机械工程学院

出　　处：《可再生能源》2020年第3期340-346,共7页Renewable Energy Resources

基　　金：国家重点研发计划(2018YFB1501203);山东省自然科学基金(ZR2019MEE076);山东省重点研发计划(2019GGX104001);山东省高等学校青创科技支持计划(2019KJB031)

摘　　要：基于模态叠加理论对风电叶片后缘疲劳加载设备摇臂支架进行模态分析和拓扑结构优化。文章通过对风电叶片后缘疲劳加载模型进行合理简化,对摇臂支架所受载荷进行了等效分析,建立了摇臂支架的有限元模型,进而基于模态叠加法对摇臂支架进行动力学响应分析,得到了各阶次的频率分布情况。最后,以各板件厚度为约束条件,建立以质量最轻为目标函数的数学模型,结合OptiStruct软件得到了优化结果。结果表明,优化后的摇臂支架质量减少了985 kg,且在相同工况下,摇臂支架的变形量减少了4.7 mm,验证了优化后摇臂支架结构的可行性,为后缘加载装备的工程应用提供了理论支撑。Based on modal superposition theory, modal analysis and topological optimization of rocker bracket of wind turbine blade trailing edge fatigue loading equipment are carried out. By rationally simplifying the fatigue loading model of wind turbine blade trailing edge, the equivalent load of rocker bracket is analyzed, and the finite element model of rocker bracket is established. Based on the modal superposition method, the dynamic response of rocker bracket is analyzed, and the frequency distribution of each order is obtained. Finally, with the thickness of each plate as the constraint condition, the objective function is established with the minimum quality as the objective function. Mathematical model, combined with OptiStruct software, is optimized. The results show that the quality of the optimized rocker bracket is reduced by 985 kg, and the deformation of the rocker bracket is reduced by 4.7 mm under the same working conditions. The feasibility of the optimized rocker bracket structure is verified, which provides theoretical support for the engineering application of the rear loading equipment.

关 键 词：风电叶片 后缘加载装备 模态叠加 轻量化 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]