1. 中国航发商用航空发动机有限责任公司， 上海 200241； 2. 中国航空研究院上海分院， 上海 200241； 3. 上海交通大学 机械与动力工程学院， 上海 200240； 4. 大连理工大学 工业装备与结构分析国家重点实验室， 辽宁 大连 116085
发布日期:2020-03-06通讯作者:张执南，男，副教授，博士生导师，电话(Tel.):021-34208037；E-mail:zhinanz@sjtu.edu.cn.作者简介:柴象海（1979-），男，山东省济南市人，研究员，从事航空发动机瞬态冲击力学、结构优化研究.基金资助:国家重点研发计划（2018YFB1106400）,上海科委项目（17DZ1120000）Lightweight Design for Improving Aeroengine Fan Blade Impact Resistance Capability
CHAI Xianghai 1,2，ZHANG Zhinan 3，YAN Jun 4，LIU Chuanxin 1,21. AECC Commercial Aircraft Engine Co., Ltd., Shanghai 200241, China; 2. Shanghai Branch of China Institute of Aeronautical Research, Shanghai 200241, China; 3. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 4. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116085, Liaoning, China
Published:2020-03-06摘要/Abstract
摘要： 以提高风扇叶片抗冲击性能为目标，以空心率为约束条件，进行风扇叶片创新构型设计优化，并通过试验件加工和性能评估，验证所设计方案的合理性.建立了瞬态冲击载荷静力学等效方法，获取了风扇叶片在工作状态下能够有效抵抗鸟撞冲击载荷的最优质量分布.基于优化结果，建立了低质量、高抗冲击性能的风扇叶片几何构型.通过3D打印风扇叶片优化构型试验件，进行加工工艺可行性和优化构型试验件的力学性能评估，验证了优化设计方案的工艺可实现性、静力性能和抗鸟撞性能.结果表明：上述优化方法的建立能够为航空发动机空心风扇叶片设计提供可行的技术手段，使得叶片空心率提高到45%以上，并显著提升叶片抗冲击性能.
关键词: 航空发动机； 宽弦风扇叶片； 轻量化设计； 拓扑优化； 3D打印
Abstract: In order to improve the impact resistance of fan blades, this paper optimizes the innovative configuration design of fan blades with the constraint of the hollow ratio. The feasibility rationality of the optimized solution was verified through the processing of test pieces and performance evaluation. The static equivalent method of transient impact load was established to obtain the optimal mass distribution of the fan blade that can effectively resist bird impact load under working conditions. Based on the optimization results, the fan blade topology optimization was reconstructed, and the geometric configuration of fan blade with low mass and high impact resistance was established. Based on 3D printed fan blade to optimize the configuration test sample, the feasibility of the processing technology and the mechanical properties of the optimized configuration of fan blades were evaluated by 3D printing. The process reliability, static force and bird impact resistance of the optimized design were verified. The results show that the proposed optimization method can be used for the design of hollow fan blades of aero engine with a hollow ratio of over 45%, and the impact resistance of the blades is significantly improved.
Key words: aero engine; wide-chord fan blade; lightweight design; topological optimization; 3D printing
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