航空发动机转子不平衡下转静碰摩实验研究

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (22) : 14-20.

论文

航空发动机转子不平衡下转静碰摩实验研究

侯理臻1，廖明夫1，王四季1，何文博2，王丹1，赵璐1

作者信息 +

Experimental study on the aero-engine rotor-stator rubbing in imbalance

HOU Lizhen1, LIAO Mingfu1, WANG Siji1, HE Wenbo2,WANG Dan1, ZHAO Lu1

Author information +

文章历史 +

摘要

为了研究大涵道比涡扇发动机风车不平衡振动问题，设计了刚度可调、频率可调的转子机匣碰摩机构，计算了机匣的刚度与频率并进行了实验测试。在实验与计算比对良好的条件下完成了碰摩实验并对实验数据进行了进动分析。研究结果表明：设计的碰摩机构，能够有效可控地进行风车不平衡状态下持续碰摩实验，重复性好且碰摩特征明显，通过进动分析，风车不平衡下转静碰摩会激起正反进动的超次谐波，以3/2倍频最为明显。研究结果为发动机风车不平衡研究以及转子安全性设计提供重要的数据支撑与实验方案。

Abstract

In order to study the windmilling imbalanced vibration of a high bypass ratio turbofan engine, a simulated rotor-stator rubbing system with adjustable stiffness and frequency was designed. The stiffness and frequency of the casing were calculated and related tests were completed. The experimental data of the rubbing tests and whirl analysis are in good agreement with the calculation results. The study shows that the rotor-stator rubbing system designed can accomplish rotor-stator rubbing experiments with good repeatability and show clearly the characteristics of rubbing. Furthermore, through whirl analysis, the rotor-stator rubbing under windmilling imbalance can lead to the superharmonic of forward whirl and backward whirl, especially the 3/2 frequency harmonics. The results provide references to the experimental schemes and data supports for windmilling imbalance study and safety design. 

导出引用

侯理臻1，廖明夫1，王四季1，何文博2，王丹1，赵璐1. 航空发动机转子不平衡下转静碰摩实验研究[J]. 振动与冲击, 2019, 38(22): 14-20

HOU Lizhen1, LIAO Mingfu1, WANG Siji1, HE Wenbo2,WANG Dan1, ZHAO Lu1. Experimental study on the aero-engine rotor-stator rubbing in imbalance[J]. Journal of Vibration and Shock, 2019, 38(22): 14-20

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