| Citation: | ZHOU Xuan, LIAO Mingfu, HOU Lizhen, et al. Characteristics and experimental verification of “critical following speed” on rotor system[J]. Journal of Aerospace Power, 2024, 39（7）：20230690 doi: 10.13224/j.cnki.jasp.20230690
|
In order to deeply investigate the mechanism of “critical following speed”, a cantilever rotor dynamic model was established. The dynamic characteristics of the rotor system under “critical following speed” were analyzed. The cantilever rotor experimental system was designed and established, and experimental verification was finished on the overspeed test bench. The analysis results showed that from a certain rotational speed, when the diameter rotational inertia was equal to polar rotational inertia, the vibration pendulum angle response of the disk increased with the increasing rotational speed. The characteristics of the mode shape under “critical following speed” lied in that the disk (diameter rotational inertia was equal to polar rotational inertia) was located at the node of mode shape. The vibration displacement of the disk center was 0, but the pendulum angle of the disk was not 0 and increased with the increasing rotational speed, and the phase angle was kept constant. If the rotor was not a single-disk structure, the diameter rotational inertia and polar rotational inertia of the component should be calculated to determine whether the “critical following speed” phenomenon occurred. Considering the mass of the rotating shaft, when the disk satisfied the condition which diameter rotational inertia was equal to polar rotational inertia, the phenomenon of “critical following speed” did not occur, and the natural frequency line could be close to the speed line within a wide range, which would widen the “resonance vibration” region. “critical following speed” made vibration extremely sensitive to unbalanced load, which should be avoided in rotor dynamics design.
| [1] |
GASCH R,NORDMANN R,PFÜTZNER H. Rotordynamik[M]. Berlin: Springer Berlin Heidelberg,2002.
|
| [2] |
廖明夫. 航空发动机转子动力学[M]. 西安: 西北工业大学出版社,2015. LIAO Mingfu. Rotor dynamics of aero-engine[M]. Xi’an: Northwestern Polytechnical University Press,2015. (in Chinese
LIAO Mingfu. Rotor dynamics of aero-engine[M]. Xi’an: Northwestern Polytechnical University Press, 2015. (in Chinese)
|
| [3] |
李岩,廖明夫,蒋云帆,等. 航空发动机双转子系统“临界跟随” 现象的机理及影响[J]. 航空动力学报,2019,34(11): 2403-2413. LI Yan,LIAO Mingfu,JIANG Yunfan,et al. Mechanism and effect of “critical follower speed” on dual-rotor system of aero-engines[J]. Journal of Aerospace Power,2019,34(11): 2403-2413. (in Chinese
LI Yan, LIAO Mingfu, JIANG Yunfan, et al. Mechanism and effect of “critical follower speed” on dual-rotor system of aero-engines[J]. Journal of Aerospace Power, 2019, 34(11): 2403-2413. (in Chinese)
|
| [4] |
廖明夫,王四季,李全坤,等. 航空发动机转子-支承系统的振动-下册[M]. 北京: 科学出版社,2023. LIAO Mingfu,WANG Siji,LI Quankun,et al. Vibration of aeroengine rotor-support system-volume Ⅱ[M]. Beijing: Science Press,2023. (in Chinese
LIAO Mingfu, WANG Siji, LI Quankun, et al. Vibration of aeroengine rotor-support system-volume Ⅱ[M]. Beijing: Science Press, 2023. (in Chinese)
|
| [5] |
李岩. 航空发动机转子系统可容模态优化设计方法与实验研究[D]. 西安: 西北工业大学,2020. LI Yan. Optimization design and experimental verification of bearable modes of aero-engine rotor system [D]. Xi’an: Northwestern Polytechnical University,2020. (in Chinese
LI Yan. Optimization design and experimental verification of bearable modes of aero-engine rotor system [D]. Xi’an: Northwestern Polytechnical University, 2020. (in Chinese)
|
| [6] |
侯理臻,王伟,王珺,等. 轮盘超转研究中的“临界跟随”现象[J]. 西安交通大学学报,2023,34(11): 2403-2413. HOU Lizhen,WANG Wei,WANG Jun,et al. The phenomenon of “critical follower speed” on disk overspeed research[J]. Journal of Xi’an Jiaotong University,2023,34(11): 2403-2413. (in Chinese
HOU Lizhen, WANG Wei, WANG Jun, et al. The phenomenon of “critical follower speed” on disk overspeed research[J]. Journal of Xi’an Jiaotong University, 2023, 34(11): 2403-2413. (in Chinese)
|
| [7] |
ALLMON B L,GLYNN C C,FISHER K L,et al. Method and apparatus for supporting rotor assemblies during unbalances: US6491497[P]. 2002-12-10.
|
| [8] |
DOERFLEIN T M,WILTON S A,ALLMON B L. Method and apparatus for supporting rotor assemblies during unbalances: US6783319[P]. 2004-08-31.
|
| [9] |
STORACE A F. Fan assembly support system: US6325546[P]. 2001-12-04.
|
| [10] |
HARRIS C M. The shock and vibration handbook [M]. New York: McGraw Hill,1996.
|
| [11] |
蒋云帆,廖明夫,刘永泉,等. 同转/对转双转子系统的动力学特性[J]. 航空动力学报,2013,28(12): 2771-2780. JIANG Yunfan,LIAO Mingfu,LIU Yongquan,et al. Dynamic characteristics of co-rotating/counter-rotating dual-rotor system[J]. Journal of Aerospace Power,2013,28(12): 2771-2780. (in Chinese
JIANG Yunfan, LIAO Mingfu, LIU Yongquan, et al. Dynamic characteristics of co-rotating/counter-rotating dual-rotor system[J]. Journal of Aerospace Power, 2013, 28(12): 2771-2780. (in Chinese)
|
| [12] |
张大义,刘烨辉,洪杰,等. 航空发动机整机动力学模型建立与振动特性分析[J]. 推进技术,2015,36(5): 768-773. ZHANG Dayi,LIU Yehui,HONG Jie,et al. Investigation on dynamical modeling and vibration characteristics for aero engine[J]. Journal of Propulsion Technology,2015,36(5): 768-773. (in Chinese
ZHANG Dayi, LIU Yehui, HONG Jie, et al. Investigation on dynamical modeling and vibration characteristics for aero engine[J]. Journal of Propulsion Technology, 2015, 36(5): 768-773. (in Chinese)
|
| [13] |
廖明夫,谭大力,耿建明,等. 航空发动机高压转子的结构动力学设计方法[J]. 航空动力学报,2014,29(7): 1505-1519. LIAO Mingfu,TAN Dali,GENG Jianming,et al. Structure dynamics design method of aero-engine high pressure rotor[J]. Journal of Aerospace Power,2014,29(7): 1505-1519. (in Chinese
LIAO Mingfu, TAN Dali, GENG Jianming, et al. Structure dynamics design method of aero-engine high pressure rotor[J]. Journal of Aerospace Power, 2014, 29(7): 1505-1519. (in Chinese)
|
| [14] |
蔡全卓. 典型航空发动机轮盘破裂失效研究[D]. 杭州: 浙江大学,2017. CAI Quanzhuo. Research on burst failure of typical aeroengine disk[D]. Hangzhou: Zhejiang University,2017. (in Chinese
CAI Quanzhuo. Research on burst failure of typical aeroengine disk[D]. Hangzhou: Zhejiang University, 2017. (in Chinese)
|
| [15] |
胡清清. 基于失效模式的轮盘破裂转速预测方法研究[D]. 杭州: 浙江大学,2020. HU Qingqing. Research on disk burst speed prediction method based on failure mode[D]. Hangzhou: Zhejiang University,2020. (in Chinese
HU Qingqing. Research on disk burst speed prediction method based on failure mode[D]. Hangzhou: Zhejiang University, 2020. (in Chinese)
|
| [16] |
金小杰. 航空发动机转子超转破裂预测方法评估与应用[D]. 南京: 南京航空航天大学,2018. JIN Xiaojie. Evaluation and application of the overspeed burst prediction method on aero-engine rotor[D]. Nanjing: Nanjing University of Aeronautics and Astronautics,2018. (in Chinese
JIN Xiaojie. Evaluation and application of the overspeed burst prediction method on aero-engine rotor[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2018. (in Chinese)
|
| [17] |
谢文涛. 航空发动机动力涡轮包容设计与验证技术研究[D]. 上海: 上海交通大学,2017. XIE Wentao. Containment design and verification technology research on powerturbine of aeroengine[D]. Shanghai: Shanghai Jiao Tong University,2017. (in Chinese
XIE Wentao. Containment design and verification technology research on powerturbine of aeroengine[D]. Shanghai: Shanghai Jiao Tong University, 2017. (in Chinese)
|
| [18] |
王浩然. 航空发动机轮盘破裂分析方法研究与应用[D]. 南京: 南京航空航天大学,2016. WANG Haoran. Research and application of analysis method of aero-engine disc fracture[D]. Nanjing: Nanjing University of Aeronautics and Astronautics,2016. (in Chinese
WANG Haoran. Research and application of analysis method of aero-engine disc fracture[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2016. (in Chinese)
|
DownLoad:
