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

Bailey, N.Y. and Hibberd, Stephen and Power, H. (2017) Effect of possible rotor deformation on the probability of face contact for a liquid film bearing. Tribology International, 109 . pp. 297-310. ISSN 1879-2464

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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.

Item Type: Article
Keywords: Reynolds equation; Method of derived distribution; Probability density function; Face contact
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
University of Nottingham, UK > Faculty of Science > School of Mathematical Sciences
Identification Number: 10.1016/j.triboint.2016.12.032
Depositing User: Eprints, Support
Date Deposited: 15 Mar 2017 09:59
Last Modified: 15 Mar 2017 10:30
URI: http://eprints.nottingham.ac.uk/id/eprint/41322

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