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Effect of possible rotor deformation on the probability of face contact for a liquid film bearing

Hibberd, S.; Bailey, N.Y.; Hibberd, Stephen; Power, H.

Authors

S. Hibberd

N.Y. Bailey

Stephen Hibberd

H. Power



Abstract

The possibility of face contact is examined for a coaxial rotor-stator bearing in dynamic motion constrained by a highly rotating very thin liquid film. A modified Reynolds equation for pressurised flow is coupled to the bearing structure leading to determination of the bearing gap from solving a nonlinear second-order non-autonomous ordinary differential equation. Periodic solutions are found via a mapping solver. Rotor deformation is parametrised by a coning angle and considered a random variable. The method of derived distributions is used to quantify variation in coning angle and examine the probability of rotor-stator contact. Additionally, effects of possible destabilising random aspects on the axial rotor oscillations are investigated. Exact solutions for probability of contact are obtained for various bearing configurations.

Citation

Hibberd, S., Bailey, N., Hibberd, S., & Power, H. (2017). Effect of possible rotor deformation on the probability of face contact for a liquid film bearing. Tribology International, 109, 297-310. https://doi.org/10.1016/j.triboint.2016.12.032

Journal Article Type Article
Acceptance Date Dec 19, 2016
Online Publication Date Dec 23, 2016
Publication Date 2017-05
Deposit Date Mar 15, 2017
Publicly Available Date Mar 15, 2017
Journal Tribology International
Print ISSN 0301-679X
Electronic ISSN 1879-2464
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 109
Pages 297-310
DOI https://doi.org/10.1016/j.triboint.2016.12.032
Keywords Reynolds equation; Method of derived distribution; Probability density function; Face contact
Public URL http://eprints.nottingham.ac.uk/id/eprint/41322
Publisher URL http://www.sciencedirect.com/science/article/pii/S0301679X16305163
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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