摘要
针对小涵道比航空发动机进气机匣可调静子叶片的轻量化设计需求,采用变密度法中的固体各向同性惩罚微观结构(SIMP)模型对静子叶片结构进行拓扑优化。根据优化结果,提出了内部空心化设计、内部增加加强筋和肋板等结构改进方案,对优化后的静子叶片与传统实心叶片分别进行了静强度和模态分析,并对比分析了计算结果。结果表明:提出的改进方案叶片质量下降38.1%以上,使1阶固有频率提升22.5%以上,最大变形增量19.2%以上;综合考虑各方案,在空心叶片内部设置沿叶身高度方向的加强筋的方案E,能够有效提升1阶固有频率,整体重量比实心叶片下降42.1%,且最大变形仅增加19.9%,为最优方案。
To address the lightweight design requirements of adjustable stator blades in low bypass ratio aero-engine intake casing,the solid isotropic material with penalization(SIMP)model based on the variable density method was used to perform topology optimization on the stator blade structure.Based on the optimization results,the structural improvement schemes include internal hollow design and the addition of reinforcing ribs and plates were proposed.The static strength and modal analysis of the optimized stator blade and the traditional solid blade were performed,and the calculation results were compared and analyzed.The results indicate that the proposed improved scheme reduces the blade mass by more than 38.1%,increases the first-order natural frequency by over 22.5%,and achieves a maximum deformation increment by more than 19.2%.Considering all options,we find scheme E which incorporates internal reinforcing ribs along the height of the hollow blade,which effectively enhances the first-order natural frequency,significantly reduces the overall weight of the blade by 42.1%compared with the solid blade,and only increased the maximum deformation by 19.9%.Therefore,it is optimal solution.
作者
邹钰
郑晓霞
何博涵
李志强
ZOU Yu;ZHENG Xiaoxia;HE Bohan;LI Zhiqiang(College of Aeronautics and Astronautics,Taiyuan University of Technology,Taiyuan,China,030024)
出处
《热能动力工程》
北大核心
2025年第2期14-21,共8页
Journal of Engineering for Thermal Energy and Power
基金
山西省基础研究计划青年科学研究项目(202203021222129)。
关键词
航空发动机
轻量化设计
可调静子叶片
拓扑优化
变密度法
aero-engine
lightweight design
adjustable stator blade
topology optimization
variable density method
