RESEARCH AND VERIFICATION ON VIBRATION CHARACTERISTICS OF THE SHROUDED TURBINE BLADE

LONG Lun; YUAN Wei; CHENG XiaoMing; TANG ZhenHuan

doi:10.16579/j.issn.1001.9669.2021.04.027

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RESEARCH AND VERIFICATION ON VIBRATION CHARACTERISTICS OF THE SHROUDED TURBINE BLADE

更新时间：2022-09-22

- RESEARCH AND VERIFICATION ON VIBRATION CHARACTERISTICS OF THE SHROUDED TURBINE BLADE
- Journal of Mechanical Strength Vol. 43, Issue 4, Pages: 960-965(2021)
- 作者机构：
  
  1. 中国航发湖南动力机械研究所
  2. 中国航空发动机集团航空发动机振动技术重点实验室
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2021.04.027
  CLC：
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LONG Lun, YUAN Wei, CHENG XiaoMing, et al. RESEARCH AND VERIFICATION ON VIBRATION CHARACTERISTICS OF THE SHROUDED TURBINE BLADE. [J]. 43(4):960-965(2021)
DOI：

LONG Lun, YUAN Wei, CHENG XiaoMing, et al. RESEARCH AND VERIFICATION ON VIBRATION CHARACTERISTICS OF THE SHROUDED TURBINE BLADE. [J]. 43(4):960-965(2021) DOI： 10.16579/j.issn.1001.9669.2021.04.027.

摘要

针对航空发动机带冠涡轮叶片振动特性分析时,将叶冠工作面一体等效的处理方式导致叶片频率计算精度降低的问题,开展了带冠涡轮叶片盘振动特性研究。提出了一种考虑变形和叶冠工作面实际接触面积的带冠涡轮叶片建模方法,以某型带冠涡轮叶片为对象,采用上述方法完成叶片建模和模态分析,并进行整机动应力测试试验验证,结果表明:采用该模型计算得到的叶片1阶共振频率与实测共振频率基本吻合,两者差异在7%以内。研究工作可为航空发动机带冠涡轮叶片振动设计提供参考。

Abstract

In order to solve the problem that the accuracy of shrouded blade frequency calculation was reduced due to integrated treatment of shroud working face,the vibration characteristics of shrouded turbine blades were studied.In this paper,a modeling method of shrouded turbine blade considering deformation and actual contact area of shroud working face was proposed.The blade disk modeling and modal analysis were completed by using the above method,and the dynamic stress test was carried out to verify that the first order resonance frequency of the blade calculated by the model is basically consistent with the measured resonance frequency,and the difference between the two is less than 7%. The research work can provide a reference for the vibration design of aero-engine shrouded turbine blade.

关键词

航空发动机带冠涡轮叶片振动特性动应力测试试验

Keywords

Aero-engineShrouded turbine bladeVibration characteristicsDynamic stress test

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