A Mistuning Sensitivity Suppression Method of Bladed Disk

Yi Xuan Li; Chuang Shao; Zhi Jun Zhang

doi:10.4028/www.scientific.net/AMR.479-481.1350

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Identification of Cabin Noise Source Based on Wavelet Transform
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A Mistuning Sensitivity Suppression Method of Bladed Disk
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 479-481A Mistuning Sensitivity Suppression Method of...

A Mistuning Sensitivity Suppression Method of Bladed Disk

Abstract:

Based on the lumped parameter modal, the modal shape characteristics of the tuned free bladed disk and the random mistuned bladed disk was studied. It can be concluded that the vibration energy is evenly distributed in the tuned free system, but in the mistuned system, the modal localization dose exist. And the localization degree gets stronger while the mistuning strength is bigger .Then based on the finite element model of a bladed disk. The intentional mistuning technology’s role in reducing the sensitivity of the bladed disk to random mistuning was studied in this paper. The blades vibration response characteristics and the intentional mistuning technology was also studied through magnification factor for amplitude and localization factor. The result shows that the mistuning sensitivity level can be reduced by adding the quantity of intentional mistuning, and intentional mistuning has an important meaning to reduce the adverse effect of the random mistuning to the blades vibration response.

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Periodical:

Advanced Materials Research (Volumes 479-481)

Pages:

1350-1354

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.479-481.1350

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Online since:

February 2012

Authors:

Yi Xuan Li, Chuang Shao, Zhi Jun Zhang

Keywords:

Bladed Disk, Finite Element Model (FEM), Intentional Mistuning, Mistuning Sensitivity, Random Mistuning

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