Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (3): 378-382.DOI: 10.12068/j.issn.1005-3026.2016.03.016

• Mechanical Engineering • Previous Articles     Next Articles

Study of Localization for the Forced Vibration of Mistuned Bladed Disks Based on Engine Orders of Excitation

ZHANG Hong-yuan1, YUAN Hui-qun2, KOU Hai-jiang1   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. School of Sciences, Northeastern University, Shenyang 110819, China.
  • Received:2015-01-14 Revised:2015-01-14 Online:2016-03-15 Published:2016-03-07
  • Contact: YUAN Hui-qun
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Abstract: In order to evaluate the effect of localization for various engine orders of excitation and levels of mistuning on mistuned bladed disks, the finite element model of aero-engine compressor’s bladed disks was established. Considering the non-linear contact problem of tenon and mortise, the localization of various engine orders of excitation of mistuned bladed disks was studied by adopting the component mode synthesis method and introducing the relative localization factors. The effect of displacement and strain energy for various engine orders of excitation of mistuned bladed disks was discussed, whose results indicated that the engine orders of excitation have significant effect on frequency, displacement and strain energy. With the increase of engine orders of excitation, the relative localization factors tend to first increase and then drop.

Key words: aero-engine, bladed disk, mistuning, engine order of excitation, relative localization factor

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