基于安装相位寻优的航空发动机多级转子振动抑制方法

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (15) : 138-145.

论文

陈越1，2，崔继文1,2，孙逊1，2，谭久彬1，2

作者信息 +

Vibration suppression method of aeroengine multistage rotor based on installation phase optimization

CHEN Yue1,2, CUI Jiwen1,2, SUN Xun1,2, TAN Jiubin1,2

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文章历史 +

摘要

为了通过最优匹配航空发动机多级转子的安装相位来实现对转子系统的振动抑制，首先建立了不平衡质量点与装配止口形心在装配过程中的坐标传递模型，然后推导了质量偏心和止口偏心对转子的激励形式，进而将坐标传递模型和激励力引入多级转子系统动力学方程，建立了各级转子安装相位与转子振动响应的数学关系。最后构建了转子振动位移归一化评价函数，并采用遗传算法实现了转子振动位移的极小化和最优安装相位序列的求解。计算结果表明，以振动位移归一化评价函数为优化目标所求得的最优安装相位，相比于默认相位，可使转子系统在临界转速下的振动位移大幅降低，且优于以几何偏心距和不平衡量为优化目标对转子振动的抑制效果。
关键词：航空发动机；多级转子；安装相位寻优；转子动力学；振动响应

Abstract

To achieve the vibration suppression of the rotor system by optimal matching of the installation phases of the multistage rotor of an aero-engine, firstly, a coordinate transfer model of the unbalanced mass points and the centers of assembly lips during assembly was established. Then, the excitation forms of the mass eccentricity and lip eccentricity to the rotor was deduced. Moreover, the coordinate transfer model and the excitation forces were introduced into the dynamic equation of the multistage rotor system. Furthermore, the mathematical relationship between the installation phases of the rotors at each stage and the vibration responses of the rotor system was established. Finally, a normalized evaluation function of the rotor vibration displacements was developed, and the genetic algorithm was used to minimize the rotor vibration displacements and solve the optimal sequence of the installation phases. The calculation results showed that compared with the default phases, the vibration displacements of the rotor system at the critical speeds could be significantly reduced by the optimal installation phases solved with the normalized evaluation function of vibration displacements as the optimization objective, which also better than the vibration suppression effect with the geometric eccentricity and unbalance as the optimization objectives.
Key words: aero-engine; multistage rotor; installation phases optimization; rotor dynamics; vibration response

导出引用

陈越1，2，崔继文1,2，孙逊1，2，谭久彬1，2. 基于安装相位寻优的航空发动机多级转子振动抑制方法[J]. 振动与冲击, 2022, 41(15): 138-145

CHEN Yue1,2, CUI Jiwen1,2, SUN Xun1,2, TAN Jiubin1,2. Vibration suppression method of aeroengine multistage rotor based on installation phase optimization[J]. Journal of Vibration and Shock, 2022, 41(15): 138-145

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