航空发动机整机结构分析及其在工程设计中的应用

Whole Aero-engine Structure Analysis and Its Application in Engine Design

航空发动机整机结构分析工作在发动机研制过程中扮演重要角色,伴随产品从方案定义到服役整个设计和制造过程。首先介绍整机结构分析的背景意义和研究进展、各大航空发动机整机OEM制造商与欧盟及相关高校所开展的研究工作。对于在发动机工程研制过程中整机结构分析在模型规模、模型质量、分析效率等方面所面临的一系列挑战,提出在模型简化及混合分网、模型修正及确认、连接结构建模方法、结果工况组合输出以及集成平台软件等方面需要开展攻关和研究的技术。最后结合案例探讨整机结构分析在载荷输出、间隙控制、振动响应分析等方面应用。

Whole Aero-Engine structure analysis (WAESA) plays an important role in engine design and manufacture. In this paper, the concept of WAESA and its development both in industry and institutes are introduced. During the engine design, WAESA is facing the challenges in the aspects of model size, model quality and computational efficiency. Therefore a series of technical researches is necessary for model simplification, mixed meshing, model updating and validation, connective structure modeling and development of integrated platforms. Finally, engineering applications of WAESA in load output, tip clearance control and vibration assessment are discussed.