Acoustic Noise and Dynamic Stress Experimental Study on Travelling Wave Vibration of High-Speed Bevel Gear in Aero-Engine

被引：0

作者：

Hu G.-A. ^{[1
,2
]}

He L.-H. ^{[1
,2
]}

Wu G.-J. ^{[1
,2
]}

Wu C.-Y. ^{[1
]}

Liu C. ^{[1
,2
]}

机构：

[1] AECC Hunan Aviation Powerplant Research Institute, Zhuzhou

[2] Key Laboratory of Aero-Engine Vibration Technology, Aero Engine Corporation of China, Zhuzhou

来源：

Tuijin Jishu/Journal of Propulsion Technology | 2019年 / 40卷 / 01期

关键词：

Acoustic noise; Aero-engine; Bevel gear; Dynamic stress; Travelling wave vibration;

D O I：

10.13675/j.cnki.tjjs.180025

中图分类号：

学科分类号：

摘要：

The accessory drive gear of small aviation turboshaft engine has a high speed. It is difficult to avoid all of the vibration modals completely within the range of running speed. It is easy to generate travelling wave vibration of nodal diameters. In order to obtain the vibration characteristics of gear in working state, and provide data support for the design of aero-engine accessory drive bevel gears, a method of noise measurement based on acoustic waveguide and the technique of measuring the dynamic stress of gear by strain gauge were applied. The resonant speed and frequency also the dynamic stress data of the gear at full range of speed have been acquired. The tests results showed that it is usefully obtained travelling wave resonant speed and frequency by acoustic waveguide. The strain gauge can accurately measure the dynamic frequency of the bevel gear when the travelling wave vibration is generated. The bevel gear had a variety of travelling wave vibration at operational speeds. The maximum frequency amplitude of dynamic stresses was 115MPa, and it existed in backward travelling wave vibration of the 5th nodal diameter. © 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.

引用

页码：166 / 174

页数：8

共 4 条

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[4] Masson P., Amram M., Ostiguy G., Theoretical and Experiment Study of Plane Wave Propagation in Asymmetrical Rectangular Waveguide Filters, Journal of Sound and Vibration, 197, 2, pp. 327-345, (1995)

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