航空发动机锥齿轮振动特性分析与试验验证  

Vibration characteristic analysis and experimental verification of bevel gear in aero-engine

作　　者：王艳丰 郜伟强 敬发宪 滕光蓉 WANG Yan-feng;GAO Wei-qiang;JING Fa-xian;TENG Guang-rong(AECC Sichuan Gas Turbine Establishment,Mianyang 621010,China)

机构地区：[1]中国航发四川燃气涡轮研究院,四川绵阳621010

出　　处：《燃气涡轮试验与研究》2022年第2期26-31,共6页Gas Turbine Experiment and Research

基　　金：国家自然科学基金(12072292)。

摘　　要：为了获取航空发动机中央传动从动锥齿轮全转速范围内的振动特性,采用行波共振理论分析与试验验证相结合的方式,研究从动锥齿轮全转速范围内的行波振动和振动应力分布特性。在行波共振理论技术基础上,分析了齿轮的危险模态并模拟计算了该齿轮的振动模态。采用“轴心引线-遥测无线传输”的测试方案,对航空发动机中央传动从动锥齿轮的振动应力进行测试,得到了从动锥齿轮的行波共振频率、共振转速和共振应变幅值。分析结果表明,发动机在工作转速范围内存在三节径前行波和四节径后行波危险共振。该齿轮在后续结构改型和优化中,应着重考虑三节径前行波和四节径后行波的处理。此外,理论分析与试验结果验证了所提出的航空发动机锥齿轮振动特性分析方法及试验方案的有效性。To uncover the vibration properties of the central drive bevel gear of an aero-engine in whole rotating speed range, the characteristics of traveling wave oscillation and vibration stress distribution of the driven bevel gear in the full speed range was investigated via combining the traveling wave resonance theory analysis and experiment validation. Based on the traveling wave resonance theory, the dangerous mode of the gear was analyzed and the vibration mode was also simulated. Further, via adopting the testing scheme of axial lead-telemetry wireless transmission, the vibration stress distribution tests were conducted on the central drive bevel gear of the aero-engine, based on which the resonant frequency, speed and strain amplitude of the traveling wave of the driven bevel gear were calculated. The results reveal that dangerous modes of the tested engine exist on its third nodal diameter forward wave and forth nodal diameter backward traveling wave modes, indicating that enhancement should be emphatically considered on the third nodal diameter forward wave and forth nodal diameter backward traveling wave modes in the structural modification and optimization of the gear in future. Moreover, the analyzed results validate the effectiveness of the presented vibration analysis method and testing scheme of engine gears.

关 键 词：航空发动机 中央传动从动锥齿轮 行波共振 振动特性 模态 节径 

分 类 号：V263.3[航空宇航科学与技术—航空宇航制造工程] TN911.3[电子电信—通信与信息系统]