航天推进技术研究院主办
[1]黄金平,张峥岳,黄道琼,等.具有初始弯曲的压气机转子振动特性分析[J].火箭推进,2019,45(04):45-51.
HUANG Jinping,ZHANG Zhengyue,HUANG Daoqiong,et al.Vibration characteristics analysis of compressor rotor with initial bending[J].Journal of Rocket Propulsion,2019,45(04):45-51.
点击复制
HUANG Jinping,ZHANG Zhengyue,HUANG Daoqiong,et al.Vibration characteristics analysis of compressor rotor with initial bending[J].Journal of Rocket Propulsion,2019,45(04):45-51.
具有初始弯曲的压气机转子振动特性分析
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
45
期数:
2019年04期
页码:
45-51
栏目:
研究与设计
出版日期:
2019-08-30
- Title:
- Vibration characteristics analysis of compressor rotor with initial bending
- 文章编号:
- 1672-9374(2019)04-0045-07
- Keywords:
- compressor; rotor; initial bending rotor; bow rotor; rotor vibration
- 分类号:
- V430
- 文献标志码:
- A
- 摘要:
- 通过Jeffcott转子建立了转子初始弯曲结构模型,推导了初始弯曲转子的振动响应,仿真分析了弯曲因子和初始弯曲相位角对转子振动响应的影响,总结了初始弯曲转子的振动特性和规律。在理论分析的基础上,开展具有初始弯曲的压气机转子运行试验,分析了该初弯转子的振动特性,对比了平衡状态对该初始弯曲转子响应的影响。结果表明:初弯转子起动时的响应幅值等于初始弯曲幅度,响应初始相位与初始弯曲相位大小相等,方向相反; 初始弯曲不会改变转子的临界转速,但会影响转子的共振幅值和相位,只有初始弯曲相位角为0°或180°时,共振相位才等于90°; 初始弯曲对刚性转子或准柔性转子振动的影响较大,而对柔性转子振动的影响相对较小; 初弯转子在某一转速区内响应振幅会出现一“凹坑”,初始弯曲相位角越接近180°,“凹坑”底部对应的振幅越小; 初弯转子响应幅值“凹坑”对应的转速范围随着平衡精度的提高而向高速区移动,当“凹坑”对应的转速范围落于共振转速区内时,转子的共振峰值可降至最低。
- Abstract:
- The structural model of an initial bending rotor was established by Jeffcott rotor,and the vibration response was derived.After simulating and analyzing the influence of curvature factor and initial bending phase angle on the rotor vibration response,the rotor vibration characteristics and response rules were summarized.On the basis of theoretical analysis,the rotor running test of compressor with initial bending was carried out.The vibration characteristics of this rotor were analyzed,and the influence of balancing state on the response of this initial bending rotor was studied.The results indicate that the response amplitude of the initial bending rotor at startup is equal to the initial bending amplitude,and the response phase at startup is equal to the initial bending phase while the direction is opposite.The initial bending does not change the critical speed of the rotor,but it affects the resonance amplitude and phase.The resonance phase is equal to 90° only when the initial bending angle is 0° or 180°.The initial bending has a great influence on the vibration of rigid or quasi-flexible rotor,but a relatively small influence on flexible rotor.The response amplitude of the initial bending rotor will appear a pit in a certain speed zone,and the closer the initial phase angle is to 180°,the smaller the amplitude corresponding to the pit bottom.The speed range corresponding to response amplitude pit of the initial bending rotor moves towards the high speed zone with the improvement of balance accuracy.When the speed range corresponding to the pit falls within the resonance speed zone,the resonance peak of the rotor can be reduced to the lowest.
参考文献/References:
[1] 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.
[2] 杨丹,甘春标,杨世锡,等.一类初弯曲转子的裂纹-碰摩故障响应分析[J].浙江大学学报(工学版),2014,48(8):1496-1501.
[3] BENTLY D E,CHARLES T H.Fundamentals of Rotating Machinery Diagnostics[M].Minden,NV,USA:Bently Pressurized Bearing Press,2002.
[4] 窦唯,叶志明,闫宇龙.涡轮泵叶轮/转子配合间隙对稳定性的影响[J].火箭推进,2016,42(4):26-34.DOUW,YE Z M,YAN Y L.Effect of tolerance clearance between turbine rotor and impeller in liquid-propellant rocket engine on stability[J].Journal of Rocket Propulsion,2016,42(4):26-34.
[5] 吴文青,谢诞梅,杨毅,等.具有初始弯曲的1 000 MW汽轮机低压转子的振动特征分析[J].振动与冲击,2014,33(17):150-153,166.
[6] KEOGH P S,MORTON P G.The dynamic nature of rotor thermal bending due to unsteady lubricant shearing within a bearing[J].Proceedings of the Royal Society A:Mathematical,Physical and Engineering Sciences,1994,445(1924):273-290.
[7] 邹剑,董广明,陈进.含初始弯曲裂纹转子的振动分析[J].振动与冲击,2012,31(3):153-156.
[8] 王魁.涡轮泵转子动平衡的控制方法研究[J].火箭推进,2002,28(6):15-18.WANG K.Study on control method of rotor dynamic balance of turbine pump [J].Journal of Rocket Propulsion,2002,28(6):15-18.
[9] KANG C H,HSU W C,LEE E K,et al.Dynamic analysis of gear-rotor system with viscoelastic supports under residual shaft bow effect[J].Mechanism and Machine Theory,2011,46(3):264-275.
[10] 沈小要,贾九红,赵玫.具有初始弯曲的不平衡转子碰摩条件的研究[J].振动与冲击,2007,26(9):11-13.
[11] 郭小鹏,吴英祥,姜广义.转子热弯曲引起的振动故障特征与试验研究[J].沈阳航空航天大学学报,2015,5(32):26-31.
[12] 王静,郭九梅,王胤龙.离心压缩机转子弯曲故障分析[J].风机技术,2009,51(6):75-77.
[13] LIN F S,MENG G.Dynamic characteristics of an unbalanced rotor with asymmetric rigidity and initial bending[C]//Proceedings of the Asia-Pacific Vibration Conference.Hangzhou:[s.n.],2001.
[14] TONG X M,PALAZZOLO A.Tilting pad gas bearing induced thermal bow- rotor instability(Morton effect)[J].Tribology International,2018,121:269-279.
[15] RAO J S.History of rotating machinery dynamics[M].Netherlands:Springer,2011.
[16] 顾家柳,丁奎元,刘启洲,等.转子动力学[M].北京:国防工业出版社,1985.
相似文献/References:
[1]朱东华,任众,许开富.结构变形对斜流压气机性能的影响研究[J].火箭推进,2016,42(03):50.
ZHU Donghua,REN Zhong,XU Kaifu.Impact of structure deformation on oblique flow compressor[J].Journal of Rocket Propulsion,2016,42(04):50.
[2]黄金平,张峥岳,黄道琼,等.高速永磁电机转子动力学特性研究[J].火箭推进,2019,45(03):20.
HUANG Jinping,ZHANG Zhengyue,HUANG Daoqiong,et al.Research on rotordynamic characteristics of high speed permanent magnet motor[J].Journal of Rocket Propulsion,2019,45(04):20.
[3]黄金平,王 珺,黄道琼,等.涡轮泵滚动轴承-转子系统高速运行试验研究[J].火箭推进,2020,46(02):50.
HUANG Jinping,WANG Jun,HUANG Daoqiong,et al.Experimental study on high-speed running of rolling bearing-rotor system of turbo-pump[J].Journal of Rocket Propulsion,2020,46(04):50.
[4]金 路,王俨剀,王 彤,等.涡轮泵转子失稳故障分析[J].火箭推进,2020,46(04):23.
JIN Lu,WANG Yankai,WANG Tong,et al.Analysis and diagnosis of turbine pump rotor instability[J].Journal of Rocket Propulsion,2020,46(04):23.
备注/Memo
收稿日期:2018-11-01; 修回日期:2019-01-28基金项目:973项目(613821)作者简介:黄金平(1977—),男,博士,高级工程师,研究领域为液体火箭发动机结构强度分析、转子动力学
更新日期/Last Update:
2019-08-31