| Citation: | HONG Jie, LI Tianrang, NI Yaoyu, et al. Bearing dynamic load model and optimal design of complex rotor system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(5): 847-854. doi: 10.13700/j.bh.1001-5965.2018.0484(in Chinese)
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Aimed at the bearing dynamic load vibration response and optimal design of a complex rotor system with inter-shaft bearing in a turbofan engine with high thrust-to-weight ratio, a mechanical model of bearing dynamic loads is established to study the effects of unbalance, bending deformation and inertia moment under different rotational speeds. The variation trend of the bearing dynamic loads of a dual-rotor system with rotating speeds is calculated and analyzed. The relationship between the dynamic load of inter-shaft bearing and rotor bending deformation as well as inertial loads is revealed. An optimal design method for the vibration response of the inter-shaft bearing based on the slope control of the elastic curves of the rotors is proposed. The results show that by optimizing the rear journal structure of the high pressure turbine and adjusting the rear bearing of the low pressure turbine near the inter-shaft bearing, the dynamic load of the inter-shaft bearing and the sensitivity of the unbalance can be effectively reduced, which provides a theoretical method for the optimal design of the bearing vibration response of a complex rotor system with inter-shaft bearing.
| [1] |
洪杰, 于欢, 肖森, 等.高速柔性转子系统非线性振动响应特征分析[J].北京航空航天大学学报, 2018, 44(4):653-661. http://bhxb.buaa.edu.cn/CN/Y2018/V44/I4/653
HONG J, YU H, XIAO S, et al.Nonlinear vibration response characteristics of high-speed flexible rotor system[J].Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(4):653-661(in Chinese). http://bhxb.buaa.edu.cn/CN/Y2018/V44/I4/653
|
| [2] |
于欢, 马艳红, 肖森, 等.高速柔性转子支承松动力学特征及动力特性[J].北京航空航天大学学报, 2017, 43(8):1677-1683. http://bhxb.buaa.edu.cn/CN/abstract/abstract14178.shtml
YU H, MA Y H, XIAO S, et al.Mechanical and dynamic characteristics of bearing with looseness on high-speed flexible rotor[J].Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(8):1677-1683(in Chinese). http://bhxb.buaa.edu.cn/CN/abstract/abstract14178.shtml
|
| [3] |
廖明夫, 刘永泉, 王四季, 等.中介轴承对双转子振动的影响[J].机械科学与技术, 2013, 32(5):641-646. http://d.old.wanfangdata.com.cn/Periodical/jxkxyjs201305004
LIAO M F, LIU Y Q, WANG S J, et al.The vibration features of a twin spool rotor system with an inter-bearing[J].Mechanical Science and Technology for Aerospace Engineering, 2013, 32(5):641-646(in Chinese). http://d.old.wanfangdata.com.cn/Periodical/jxkxyjs201305004
|
| [4] |
王俨剀, 廖明夫, 张家豪.航空发动机中介轴承的动力学减载设计[J].航空动力学报, 2017, 32(2):492-499. http://d.old.wanfangdata.com.cn/Periodical/hkdlxb201702030
WANG Y K, LIAO M F, ZHANG J H.Dynamic load reduction design for inter-shaft bearing of aircraft engine[J].Journal of Aerospace Power, 2017, 32(2):492-499(in Chinese). http://d.old.wanfangdata.com.cn/Periodical/hkdlxb201702030
|
| [5] |
CHILDS D W.A modal transient rotor dynamic model for dual-rotor jet engine systems[J].Journal of Manufacturing Science and Engineering, 1976, 98(3):876-882. http://www.researchgate.net/publication/291170682_MODAL_TRANSIENT_ROTORDYNAMIC_MODEL_FOR_DUAL-ROTOR_JET_ENGINE_SYSTEMS
|
| [6] |
GUPTA K, ATHRE K, GUPTA K D.Unbalance response of a dual rotor system:Theory and experiment[J].Journal of Vibration and Acoustics, 1993, 115(4):427-435. doi: 10.1115/1.2930368
|
| [7] |
GUPTA K D, GUPTA K, ATHRE K.Stability analysis of dual rotor system by extended transfer matrix method[C]//ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition.New York: ASME, 1989: V005T13A013.
|
| [8] |
LI Q, YAN L, HAMILTON J F.Investigation of the steady-state response of a dual-rotor system with intershaft squeeze film damper[J].Journal of Engineering for Gas Turbines and Power, 1985, 108(4):613-618. http://www.researchgate.net/publication/245352215_Investigation_of_the_Transient_Response_of_a_Dual-Rotor_System_With_Intershaft_Squeeze-Film_Damper
|
| [9] |
HYLTON P D.Minimizing dynamic response of counter-rotating engines through optimized node placement[C]//ASME Turbo Expo 2010.New York: ASME, 2010: 25-32.
|
| [10] |
CHEN X, LIAO M F.Steady-state characteristic of a dual-rotor system with intershaft bearing subjected to mass unbalance and base motions: GT-2018-75215[R].New York: ASME, 2018.
|
| [11] |
CHEN X, LIAO M F.Transient characteristic of a dual-rotor system with intershaft bearing subjected to mass unbalance and base motions dueing start-up: GT-2018-75227[R].New York: ASME, 2018.
|
| [12] |
YU P C, ZHANG D Y, MA Y H, et al.Dynamic modeling and vibration characteristics analysis of the aero-engine dual-rotor system with fan blade out[J].Mechanical Systems and Signal Processing, 2018, 106:158-175. doi: 10.1016/j.ymssp.2017.12.012
|
| [13] |
钟一谔, 何衍宗, 王正, 等.转子动力学[M].北京:清华大学出版社, 1984.
ZHONG Y E, HE Y Z, WANG Z, et al.Rotor dymamics[M].Beijing:Tsinghua University Press, 1984(in Chinese).
|
| [14] |
张大义, 刘烨辉, 梁智超, 等.航空发动机双转子系统临界转速求解方法[J].推进技术, 2015, 36(2):292-298. http://d.old.wanfangdata.com.cn/Periodical/tjjs201502018
ZHANG D Y, LIU Y H, LIANG Z C, et al.Prediction for critical speed of double spools system in aero engines[J].Journal of Propulsion Technology, 2015, 36(2):292-298(in Chinese). http://d.old.wanfangdata.com.cn/Periodical/tjjs201502018
|
| [15] |
洪杰, 王华, 肖大为, 等.转子支承动刚度对转子动力特性的影响分析[J].航空发动机, 2008, 34(1):23-27. doi: 10.3969/j.issn.1672-3147.2008.01.008
HONG J, WANG H, XIAO D W, et al.Effects of dynamic stiffness of rotor bearing on rotor dynamic characteristics[J].Aeroengine, 2008, 34(1):23-27(in Chinese). doi: 10.3969/j.issn.1672-3147.2008.01.008
|
| [16] |
马艳红, 何天元, 张大义, 等.支承刚度非线性转子系统的不平衡响应[J].航空动力学报, 2014, 29(7):1527-1534. http://d.old.wanfangdata.com.cn/Periodical/hkdlxb201407003
MA Y H, HE T Y, ZHANG D Y, et al.Imbalance response of rotor system with nonlinear bearing stiffness[J].Journal of Aerospace Power, 2014, 29(7):1527-1534(in Chinese). http://d.old.wanfangdata.com.cn/Periodical/hkdlxb201407003
|
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