小型短寿命涡扇发动机涡轮叶片疲劳失效分析

洪杰; 刘书国; 张大义; 陈萌

小型短寿命涡扇发动机涡轮叶片疲劳失效分析

北京航空航天大学能源与动力工程学院, 北京 100191

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出版历程
- 收稿日期: 2011-04-27
- 修回日期: 2011-07-12
- 刊出日期: 2012-03-28

Fatigue failure analysis of turbine blade in miniature short-life turbofan engine

School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 针对某小型短寿命涡扇发动机台架试车中涡轮叶片断裂故障,进行了叶片断口分析、振动监测信号对比和结构动力学特性分析.讨论了叶片的固有振动特性与激振因素,阐明了该叶片故障主要是由叶片机匣严重碰摩激起的叶片以第一阶、第二阶及其耦合模态自由振动,导致的叶片根部高周疲劳破坏.提出合理控制转静子初始间隙和提高叶片根部阻尼,能有效防止该类型故障发生.
- 叶片 /
- 疲劳 /
- 振动 /
- 碰摩 /
- 断裂
Abstract: For the fracture fault of the high-pressure turbine blade in the miniature short-life turbofan engine during a certain rig test,the blade fractography,the vibration signal and the fault blade dynamics was observed and analyzed.Blades natural characteristics and exciting sources were analyzed in details;the faults mainly stemmed from fatigue for the 1st order,the 2nd order and the coupled mode vibrations due to the instantaneous severe rub impact force.Reasonable control of the clearance and improving the blade root damping can prevent the fault effectively.
- blade /
- fatigue /
- vibration /
- rub impact /
- fracture

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参考文献(13)

[1]	王大伟,张利明,洪杰.弹用涡扇发动机可靠性参数选择及评定方法[J].北京航空航天大学报,2009,35(12):1468-1472. WANG Dawei,ZHANG Liming,HONG Jie.Selection of reliability parameters and targets assessment for certain missile turbofan engine[J].Journal of Beijing University of Aeronautics and Astronautics,2009,35(12):1468-1472.(in Chinese)
[2]	何凤平,张鹏峰,邵锦文.涡喷发动机压气机转子叶片的故障分析及研究[J].战术导弹技术,2007,7(4):25-27. HE Fengping,ZHANG Pengfeng,SHAO Jinwen.Analysis and study of the failure of compressor rotor blade used for turbojet engine[J].Tactical Missile Technology,2007,7(4):25-27.(in Chinese)
[3]	王海东,刘华华.某型涡喷发动机工作叶片故障分析[J].航空维修与工程,2005(4):50-52. WANG Haidong,LIU Huahua.Fault analysis on rotor blade of turbojet[J].Aviation Engineering &Technology,2005(4):50-52(in Chinese)
[4]	王婧,王德友,韩清凯.压气机叶片掉角故障的机理分析及其治理[J].中国机械工程,2008,9(19):1048-1050. WANG Jing,WANG Deyou,HAN Qingkai.Mechanism analysis and treatment on loss corner faults of compressor blades[J].China Mechanical Engineering,2008,9(19):1048-1050.(in Chinese)
[5]	宋兆泓,陈光,张景武,等.航空发动机典型故障分析[M].北京:北京航空航天大学出版社,1993.
[6]	卢文海,刘丽玉,白明远.发动机燃气涡轮叶片断裂分析[J].失效分析与预防,2010,4(5):252-256. LU Wenhai,LIU Liyu,BAI Mingyuan.Fracture analysis of gas-turbine blades of aircraft engine[J].Failure Analysis and Prevention,2010,4(5):252-256.(in Chinese)
[7]	Tim J C.Common failures in gas turbine blades[J].Engineering Failure Analysis,2005,12:237-247.
[8]	杨兴宇,耿中行,蔡向晖,等.某型发动机二级压气机叶片断裂故障分析研究[J].航空动力学报,2001,4(16):327-330. YANG Xingyu,GENG Zhongxing,CAI Xianghui,et al.Fracture analysis of the 2nd stage compressor blade in an aero engine[J].Journal of Aerospace Power,2001,4(16):327-330.(in Chinese)
[9]	李其汉,王延荣,王建军.航空发动机叶片高循环疲劳失效研究[J].航空发动机,2003,29(4):16-18. LI Qihan,WANG Yanrong,WANG Jianjun.Investigation of high cycle fatigue failures for the aeroengine blades[J].Aeroengine,2003,29(4):16-18.(in Chinese)
[10]	张大义,马艳红,洪杰,等.气流激励下叶片动力响应分析方法[J].航空动力学报,2009,24(7):1523-1529. ZHANG Dayi,MA Yanhong,HONG Jie,et al.Dynamical response analysis on blades arisen by aerodynamic forces through sequential method[J].Journal of Aerospace Power,2009,24(7):1523-1529.(in Chinese)
[11]	晏砺堂,王德友.航空双转子发动机动静件碰摩振动特征研究[J].航空动力学报,1998,2(13):173-176. YAN Litang,WANG Deyou.Vibration features from rubbing between rotor and casing for a dual-shaft aeroengine[J].Journal of Aerospace Power,1998,13(2):173-176.(in Chinese)
[12]	孟越,李其汉.应用整体传递系数法分析复杂转子系统转静件碰摩振动特征[J].航空动力学报,2003,18(1):146-150. MENG Yue,LI Qihan.Using WTCM to analyze rub-impact default of a complex rotor system[J].Journal of Aerospace Power,2003,13(2):146-150.(in Chinese)
[13]	Turner K E,Dunn M,Padova C.Airfoil deflection characteristics during rub events.ASME Paper 2010-GT-22166,2010.