| 装配参数对附件机匣锥齿轮破裂故障的影响 |
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| 引用本文： | 栾孝驰,沙云东,郭小鹏,杨帝思,马侹.装配参数对附件机匣锥齿轮破裂故障的影响[J].中国机械工程,2020,31(4):438. |
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| 作者姓名： | 栾孝驰 沙云东 郭小鹏 杨帝思 马侹 |
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| 作者单位： | 1.沈阳航空航天大学辽宁省航空推进系统先进测试技术重点实验室，沈阳，110136
2.哈尔滨工程大学动力与能源工程学院，哈尔滨，150001
3.中国航发沈阳发动机研究所第十三室，沈阳，110152
4.中国人民解放军第5719工厂质安部，彭州，611936 |
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| 基金项目： | 中国航发产学研合作项目（HFZL2018CXY017）；
航空基础科学基金资助项目（20151554002） |
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| 摘 要： | 针对航空发动机附件机匣锥齿轮由装配偏差引起的破裂故障，采用行波共振原理和有限元法，对锥齿轮进行模态分析和静应力计算，分析了啮合锥齿轮的齿轮间隙和主动锥齿轮垂直安装角度对主动锥齿轮齿根应力的影响。仿真与试验结果分析表明：主动锥齿轮结构具有一节径和二节径振型，模态频率与试验误差小于2.5%；齿轮装配间隙对齿根应力影响较小，装配工艺的要求相对合理；主动锥齿轮安装角度偏差对齿根应力影响较大，因此需要严格控制角度偏差。主动锥齿轮断齿金相组织形态及其破裂特征分析表明，锥齿轮的破裂类型为疲劳断裂，断口具有节径型振动疲劳断裂特征。
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| 关 键 词： | 装配参数 航空发动机 锥齿轮 破裂故障 |
Influences of Assembly Parameters on Rupture Failure of Accessory Casing Bevel Gears |
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| LUAN Xiaochi,SHA Yundong,GUO Xiaopeng,YANG Disi,MA Ting.Influences of Assembly Parameters on Rupture Failure of Accessory Casing Bevel Gears[J].China Mechanical Engineering,2020,31(4):438. |
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| Authors: | LUAN Xiaochi SHA Yundong GUO Xiaopeng YANG Disi MA Ting |
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| Affiliation: | 1.Liaoning Province Key Laboratory of Advanced Measurement and Test Technology of Aviation Propulsion Systems,Shenyang Aerospace University,Shenyang,110136
2.College of Power and Energy Engineering,Harbin Engineering University,Harbin,150001
3.13 Room,AECC Shenyang Engine Design Institute,Shenyang,110015
4.Quality Safety Department,The Chinese Peoples Liberation Army No. 5719 Factory,Pengzhou,Sichuan,611936 |
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| Abstract: | Aiming at the rupture failures of bevel gears of aero engine accessory cases caused by assembly deviations, traveling wave resonance principle and finite element method were carried out to calculate the mode and static stress of the bevel gears. The influences of gear backlash and vertical installation angle deviations on the root stress of the driving bevel gear were discussed. Simulation and test results show that the driving bevel gear structure includes 1 node-diameter and 2 node-diameter vibration modes. The errors between modal frequency simulation and test are less than 2.5%. The gear backlash has less effect on the root stress. The great influence caused by the installation angle deviations of the driving bevel gears is validated. Thus, the installation angle deviations should be strictly controlled. The analysis of the metallographic structure and fracture characteristics of the driving bevel gears show that the fracture type of the bevel gears is fatigue fracture, and the fracture has the characteristics of nodal-diameter vibration fatigue fracture.
assembly parameter; aeroengine; bevel gear; rupture failure |
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