【摘要】 压气机是航空发动机的核心部件之一，为了保证结构运行的可靠性，并提升发动机的推重比，需要对其结构进行减重优化设计。相较于单级轮盘，多级轮盘的优化分析更符合实际，但优化效率更低。以复杂的多级轮盘转子优化为研究目标，通过对结构参数化建模，实现尺寸形状自动控制，并基于全局敏感性分析获得轮盘的关键尺寸以及结构强度受参数影响的情况，为优化模型的简化和调整提供参考。研究轮盘结构破裂裕度，搭建高效、通用的优化流程，在保证结构静强度的前提下，通过遗传算法、可行方向法实现压气机转子减重4.94%的优化效果，对压气机结构设计具有一定的参考意义。更多还原

【Abstract】 Compressors are one of the core components of aero-engines. To ensure the reliability of the structure and improve the thrust-to-weight ratio of the engine, it is of great significance to execute weight reduction designs of the rotor structure. Compared with single-stage disk optimization, a multi-stage disk analysis is more practical but less efficient as the optimization process is concerned. In this paper, the optimization of a complex multi-stage disk rotor is studied. The automatic size and shape control is realized through a parametric modeling of the structure. Based on a global sensitivity analysis, the critical dimensions of the disk and the influence of parameters on the structural strength are obtained, which provides a reference for the simplification and adjustment of the optimization model. The burst margin of disk structure is studied, and an efficient, general optimization process is formulated to realize the weight reduction optimization design. On the premise of ensuring the static strength of the structure, the optimization achieves a reduced weight of the compressor rotor by 4.94% through the genetic algorithm and feasible direction method. The present work can be useful for similar research on structural optimization design of aero-engine compressors.更多还原