航空发动机失谐叶盘动态特性研究进展

航空发动机叶盘结构中不可避免存在的失谐会严重影响发动机的结构完整性和可靠性,国内外针对这一问题进行了大量深入的研究。详述了失谐叶盘建模、模型减缩、动态特性分析及评价等方面的研究现状,重点介绍多级叶盘和几何失谐叶盘的建模和动态特性分析等方面的最新研究进展,并对失谐叶盘未来研究方向进行了预测。

A Review of Dynamic Characteristics of Mistuned Bladed Disks

The inevitable mistuning in aeroengine bladed disks can lead to considerable increase in vibratory ampli-tude and stress, and thus deteriorate the structural integrity and reliability. Therefore, the dynamic characteristics of mis-tuned bladed disks have been drawn great attention in both academic and engineering ifelds around the world. This paper presents a review of the modeling and analysis methods for mistuned bladed disks, with particular emphasis on the geomet-ric mistuning of integrally bladed rotors and multistage bladed disks. The recent researches on mathematical representation and reduced-order modeling of geometric mistuning are introduced. Important developments and future research directions in this area are highlighted.