Influences of small mistuning on dynamic characteristics of bladed disks

被引：0
|
作者：
Gao Y. [1 ]
Yao J. [2 ]
Yang C. [2 ]
Zhang K. [2 ]
机构：
[1] Guizhou Aeroengine Research Institute, Aero Engine Corporation of China, Guiyang
[2] College of Aerospace Engineering, Chongqing University, Chongqing
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2018年 / 33卷 / 07期
关键词：
Amplitude amplification; Frequency deviation; Mistuned bladed disk; Mode localization; Small mistuning;
D O I：
10.13224/j.cnki.jasp.2018.07.004
中图分类号：
学科分类号：
摘要：
The mistuning strength referred to as "small mistuning" was defined based on the frequency differences between the tuned and mistuned bladed disk. The existence and distribution of the small mistuning in industrial bladed disks were introduced. A lumped parameter bladed disk model with three-degree-of-freedom (3-DOF) in each sector was used as an example to investigate the effects of small mistuning on the dynamic characteristics. The results indicated that small mistuning can lead to severe vibration localization at the maximum nodal diameter. For the studied example, mistuning strength 0.001 can lead to a modal localization factor 17, and mistuning strength 0.007 can lead to a maximum amplitude amplification factor 1.8. Therefore, special attention must be paid to small mistuning during design and service stages of the bladed disk structures. © 2018, Editorial Department of Journal of Aerospace Power. All right reserved.
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页码：1566 / 1574
页数：8
相关论文
共 28 条
  • [1] Li Q., Wang Y., Wang J., Investigation of high cycle fatigue failures for the aero engine blades, Aeroengine, 29, 4, pp. 16-18, (2003)
  • [2] Wang J., Li Q., Zhu Z., Vibratory localization of mistuned bladed disk assemblies: a review, Advances in Mechanics, 30, 4, pp. 517-528, (2000)
  • [3] Castanier M.P., Pierre C., Modeling and analysis of mistuned bladed disk vibration: status and emerging directions, Journal of Propulsion and Power, 22, 2, pp. 384-396, (2006)
  • [4] Zang C., Lan H., Advances in research vibration problem of mistuned blisk assemblies, Advances in Aeronautical Science and Engineering, 2, pp. 133-142, (2011)
  • [5] Bai B., Bai G., Tong X., Et al., Research on vibration problem of integral mistuned bladed disk assemblies at home and abroad, Journal of Aerospace Power, 29, 1, pp. 91-103, (2014)
  • [6] Yao J., Gao Y., Wang J., A review of dynamic characteristics of mistuned bladed disks, Aeronautical Manufacturing Technology, 516, 21, pp. 76-85, (2016)
  • [7] Castanier M.P., Pierre C., Using intentional mistuning in the design of turbomachinery rotors, AIAA Journal, 40, 10, pp. 2077-2086, (2002)
  • [8] Wang J., Yao J., Li Q., Probability characteristics of vibratory mode of bladed disk assemblies with random stiffness mistuning, Journal of Aerospace Power, 23, 2, pp. 256-262, (2008)
  • [9] Bladh R., Pierre C., Castanier M.P., Dynamic response predictions for a mistuned industrial turbomachinery rotor using reduced-order modeling, Journal of Engineering for Gas Turbines and Power, 124, 4, pp. 311-324, (2002)
  • [10] Wang J., Yu C., Yao J., Et al., Vibratory mode localization factors of mistuned bladed disk assemblies, Journal of Propulsion Technology, 30, 4, pp. 457-461, (2009)
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