The Effect of Support Misalignment on Vibration Characteristics of Aero-Engine Rotor Systems under Ultra-High Operating Speeds

被引：0
|
作者：
Heng, Xing [1 ]
Zhang, Haibiao [1 ,2 ]
Wang, Ailun [1 ]
Zhang, Wei [1 ]
机构：
[1] Cent South Univ, Sch Mech & Elect Engn, Changsha 410114, Peoples R China
[2] AECC, Hunan Aviat Powerplant Res Inst, Zhuzhou 412002, Peoples R China
来源：
MACHINES | 2024年 / 12卷 / 10期
关键词：
aero-engine; rotor; flexible discontinuous rotor support system; the misaligned combined support system; vibration characteristics;
D O I：
10.3390/machines12100669
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In order to ensure the vibration safety of rotor systems in the next generation of aero-engines and reduce the impact of misalignment faults, the effect of support misalignment on the vibration characteristics of rotor systems under ultra-high operating speeds is investigated in this paper. Firstly, an analytical excitation model of the rotor systems under ultra-high operating speeds is established, considering the impact of the support misalignment. Then, based on the model of the misaligned combined support system, the dynamic model of the flexible discontinuous rotor support system with the support misalignment is presented. Subsequently, based on the established model, the effects of support parameters and support misalignment amounts on the vibration characteristics of the rotor support system are analyzed. Finally, experimental validation of the research findings is conducted. The research result shows that the support misalignment increases the vibration response of the rotor, reduces the vibration reduction efficiency of the combined support system, and consequently decreases the vibration safety of the rotor support system.
引用
收藏
页数：17
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