带干摩擦阻尼结构叶片振动响应试验

陈璐璐; 马艳红; 杨鑫; 洪杰

带干摩擦阻尼结构叶片振动响应试验

北京航空航天大学能源与动力工程学院, 北京 100191

基金项目: 国家自然科学基金(10577006)

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出版历程
- 收稿日期: 2007-09-26
- 修回日期: 2007-12-26
- 刊出日期: 2008-09-28

Experiment of vibration and response of blade with dry friction structure

School of Jet Propulsion, Beijing University of Aeronautics Astronautics, Beijing 100191, China

摘要

摘要: 建立了非旋转状态叶片试验系统,正压力加载方案可实现连续调节并较准确测量接触压力.利用该试验系统,对不同接触紧度,接触角度带冠叶片的振动特性及响应进行测试,结果表明带冠叶片出现了共振频率分叉的非线性现象.通过试验分析叶冠接触面紧度,接触角度等重要参数对带冠叶片振动特性和减振效果的影响规律,结果显示接触角度应根据振型综合考虑接触面间相对运动在切向和法向两个方向分量的比例关系进行选取.
- 干摩擦阻尼 /
- 非线性振动 /
- 接触紧度 /
- 接触角度
Abstract: Atesting system was set up to measure dynamic response of non-rotating shrouded blades.The loading scheme can achieve continuous adjustment and accurate measurement of contact pressure.The vibration characteristics and response of the shrouded blade with different mounting tightness and pressure angles were measured.The results show that the shrouded blade has nonlinear phenomena-the resonance frequencies are forficate.The effect of mounting tightness and pressure angle were analyzed according to the test data.The results indicate that the selection of pressure angle should be considered according to the proportional relations between relative motion to normal direction and tangential direction based on vibration mode.
- dry friction damping /
- nonlinear vibration /
- mounting tightness /
- pressure angle

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参考文献(9)

[1]	陈光.航空燃气涡轮发动机结构设计[M].北京.北京航空航天大学出版社,1988:103-104.
[2]	Griffin J H.Friction damping of resonant stresses in gas turbine engineering airfoils[J].ASME Journal of Engineering for Power,1980,102:329-333.
[3]	Sanliturk K Y,Ewins D J.Modelling two dimensional friction contact and its application using harmonic balance method[J].Journal of Sound and Vibration,1996,193(2):511-523.
[4]	Menq C H,Chedamparam P,Griffin J H.Friction damping of two-dimensional motion and its application in vibration control[J].Journal of Sound and Vibration,1991,144(3):427-447.
[5]	Sinha A,Griffin J H.Effects of static friction on the forced response of frictionally damped turbine blades[J].ASME Journal of Engineering for Gas Turbines and Power,1984,106:65-69.
[6]	Zmitrowicz A.A vibration analysis of a turbine blade system damped by dry friction force[J].International Journal of Mechanical Science,1981,Z3(12):741-761.
[7]	Yang B D,Menq C H.Modeling of friction contact and its application to the design of shroud contact[J].Transactions of ASME Journal of Engineering for Gas Turbines and Power,1997,119,958-963.
[8]	Yang B D,Chen J J,Menq C H.Prediction of resonant response of shrouded blades with three-dimensional shroud constraint[J].Transactions of ASME Journal of Engineering for Gas Turbines and Power,1999,121:523-529.
[9]	洪杰.带凸肩叶片非旋转状态减振特性试验[J].北京航空航天大学学报,2006:1174-1179.HONG Jie.Experiment of damping characteristic of nonrotating shrouded blade[J].Journal of Beijing University of Aeronautics Astronautics,2006:1174-1179.(in Chinese)