Alternation of the dynamic coefficients of short journal bearings due to wear

Show simple item record Papanikolaou, Michail Farmakopoulos, Michael G. Papadopoulos, Chris A. 2019-05-22T15:16:50Z 2019-05-22T15:16:50Z 2015-05-31
dc.identifier.citation Michael G. Papanikolaou, Michael G. Farmakopoulos and Chris A. Papadopoulos. Alternation of the dynamic coefficients of short journal bearings due to wear. International Journal of Structural Integrity, Volume 6, Issue 5, 2015, pp. 649-664 en_UK
dc.identifier.issn 1757-9864
dc.description.abstract Purpose – Wear in journal bearings occurs when the operating conditions (high load, high temperature,low angular velocity or low viscosity), downgrade the ability of the bearing to carry load. The wear depth increases because the rotor comes in contact with the bearing surface. Wear in journal bearings affects their characteristics because of its influence on the thickness of the fluid film. This influence can be detected in the dynamic behavior of the rotor and especially in the dynamic stiffness and damping coefficients. The paper aims to discuss these issues. Design/methodology/approach – In this paper, the effect of wear on the rotor dynamic stiffness and damping coefficients (K and C) of a short journal bearing is investigated. K and C in this work are estimated by using two methods a semi-analytical method and finite element (FE) analysis implemented in the ANSYS software. Findings – The main goal of this research is to make the identification of wear in journal bearings feasible by observing the alternation of their dynamic coefficients. Both of the methods implemented are proven to be useful, while FE analysis can provide more accurate results. Originality/value – This paper is original and has not been published elsewhere. en_UK
dc.language.iso en en_UK
dc.publisher Emerald en_UK
dc.rights Attribution-NonCommercial 4.0 International *
dc.rights.uri *
dc.subject Wear en_UK
dc.subject dynamic coefficients en_UK
dc.subject hydrodynamic journal bearing en_UK
dc.title Alternation of the dynamic coefficients of short journal bearings due to wear en_UK
dc.type Article en_UK

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