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CLC number: TH133.31

On-line Access: 2012-08-30

Received: 2012-03-28

Revision Accepted: 2012-07-20

Crosschecked: 2012-08-17

Cited: 5

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Journal of Zhejiang University SCIENCE A 2012 Vol.13 No.9 P.647-664

http://doi.org/10.1631/jzus.A1200082


Misalignment analysis of journal bearing influenced by asymmetric deflection, based on a simple stepped shaft model


Author(s):  Zhen-peng He, Jun-hong Zhang, Wei-song Xie, Zhou-yu Li, Gui-chang Zhang

Affiliation(s):  State Key Laboratory of Engine, Tianjin University, Tianjin 300072, China; more

Corresponding email(s):   hezhenpeng@tju.edu.cn, zhangjh@tju.edu.cn, weis_xie@tju.edu.cn

Key Words:  Misalignment, Stepped shaft, Asymmetric structure, Journal bearing


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Zhen-peng He, Jun-hong Zhang, Wei-song Xie, Zhou-yu Li, Gui-chang Zhang. Misalignment analysis of journal bearing influenced by asymmetric deflection, based on a simple stepped shaft model[J]. Journal of Zhejiang University Science A, 2012, 13(9): 647-664.

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journal="Journal of Zhejiang University Science A",
volume="13",
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pages="647-664",
year="2012",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1200082"
}

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%T Misalignment analysis of journal bearing influenced by asymmetric deflection, based on a simple stepped shaft model
%A Zhen-peng He
%A Jun-hong Zhang
%A Wei-song Xie
%A Zhou-yu Li
%A Gui-chang Zhang
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%@ 1673-565X
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%DOI 10.1631/jzus.A1200082

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T1 - Misalignment analysis of journal bearing influenced by asymmetric deflection, based on a simple stepped shaft model
A1 - Zhen-peng He
A1 - Jun-hong Zhang
A1 - Wei-song Xie
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A1 - Gui-chang Zhang
J0 - Journal of Zhejiang University Science A
VL - 13
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SP - 647
EP - 664
%@ 1673-565X
Y1 - 2012
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1200082


Abstract: 
The effects of journal misalignment on a journal bearing caused by an asymmetric rotor structure are presented in this study. A new model considering the asymmetric deflection is applied. Also, the thermo-hydrodynamic of the oil film in the journal bearing and straightforward elasticity theory are considered in the analysis. Based on the structure stiffness equivalent characteristic, a simple stepped shaft can reflect the entire complex structure model. The existing lubrication model, which does not consider this angle component, is not very precise for journal bearings. Film pressure, misalignment angle, velocity field, oil leakage, and temperature field were calculated and compared in the journal bearing analysis. The results indicate that bearing performances are greatly affected by misalignment caused by the asymmetric structure. A simple stepped shaft can effectively represent a misaligned journal bearing in a rotor-bearing system.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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