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基于叶尖定时的航空发动机涡轮叶片振动测量

刘美茹 滕光蓉 肖潇

刘美茹, 滕光蓉, 肖潇. 基于叶尖定时的航空发动机涡轮叶片振动测量[J]. 航空动力学报, 2020, 35(9): 1954-1963. doi: 10.13224/j.cnki.jasp.2020.09.018
引用本文: 刘美茹, 滕光蓉, 肖潇. 基于叶尖定时的航空发动机涡轮叶片振动测量[J]. 航空动力学报, 2020, 35(9): 1954-1963. doi: 10.13224/j.cnki.jasp.2020.09.018
LIU Meiru, TENG Guangrong, XIAO Xiao. Vibration measurement of turbine rotor blades of aero-engine based on blade tip-timing[J]. Journal of Aerospace Power, 2020, 35(9): 1954-1963. doi: 10.13224/j.cnki.jasp.2020.09.018
Citation: LIU Meiru, TENG Guangrong, XIAO Xiao. Vibration measurement of turbine rotor blades of aero-engine based on blade tip-timing[J]. Journal of Aerospace Power, 2020, 35(9): 1954-1963. doi: 10.13224/j.cnki.jasp.2020.09.018

基于叶尖定时的航空发动机涡轮叶片振动测量

doi: 10.13224/j.cnki.jasp.2020.09.018
基金项目: 国家自然科学基金(51705397); 国家科技重大专项(2017-Ⅴ-0009); 预研领域基金(61400040303); 航空动力基金(6141B090569)

Vibration measurement of turbine rotor blades of aero-engine based on blade tip-timing

  • 摘要: 介绍了基于叶尖定时的非接触振动测试系统应用于涡轮转子叶片的技术瓶颈,突破高温传感器结构设计、安装以及冷却等技术难点,通过设置系统触发信号保持时间,解决H型涡轮转子叶片对叶尖定时信号的二次触发问题,并给出核心机状态下转速基准实现方法。将非接触振动测量技术成功应用在某型涡扇发动机高压涡轮转子叶片振动监测中,有效获取涡轮转子叶片共振时的振动频率和幅值,并与应变计测量叶根动应变结果进行比对。结果显示:基于叶尖定时的非接触振动测试系统和接触式动应力测试系统均可监测涡轮转子叶片振动,成功辨识转子叶片8 200 r/min时的12阶激励阶次激发的一弯振动模态,两种分析方法识别共振频率相对误差在4%以内。

     

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出版历程
  • 收稿日期:  2020-03-01
  • 刊出日期:  2020-09-28

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