航空发动机转子结构布局优化设计方法

结构是航空发动机功能、性能及可靠性设计水平的综合体现，一切技术要求、性能指标、强度指标或者结构的安全性和可靠性都应建立在合理的结构布局设计上。提出了航空发动机转子结构布局并对其进行优化设计的观点，同时以典型高推重比涡扇发动机高压转子的结构构型为例，基于试验设计（DOE）的响应面法，应用有限元计算并通过多目标遗传优化算法，分别从抗变形能力、力学环境适应能力以及转子结构效率综合进行相关优化计算，论证了合理的结构布局形式可以大幅度提升转子的力学特性。研究方法对于航空发动机转子系统的初始结构布局设计具有指导意义，可以显著减少结构设计的迭代次数，缩短设计周期。 

Optimized design method of aero-engine rotor structure layout

Structure is the comprehensive embodiment of aero-engine function, performance, and reliabi-lity design level, and all technical requirements, performance indicators, strength indicators, or structural safety and reliability should be based on reasonable structure layout design. This paper puts forward the viewpoint of the layout and optimization about the aero-engine rotor structure. Taking the structure configuration of the high-pressure rotor of a typical turbofan engine as an example and based on the response surface method of the design of experiment (DOE), the finite element method is used to calculate through multi-objective genetic optimization algorithm. Relevant optimization calculations are carried out from the aspects of deformation resistance, mechanical environment adaptability and rotor structural efficiency respectively. It is demonstrated that reasonable structure layout can greatly enhance the mechanical properties of rotors. The research method is of great guiding significance for the initial structure layout design of the aero-engine rotor system, which can significantly reduce the number of iterations and shorten the design cycle.