Dynamic Behavior of a Tilting-Pad Thrust Bearing Operating Under a Hybrid Lubrication Regime

Jefferson Silva Barbosa, Aldemir Ap Cavallini Jr, Ilmar Ferreira Santos, Valder Steffen Jr*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The present contribution aims to evaluate the effects of the oil pressure injection on the dynamic behavior of a hybrid-lubricated tilting-pad thrust bearing. First, a thermohydrodynamic model is applied to determine the equilibrium position as dictated by pressure and temperature distributions resulting from both hydrodynamic and hybrid lubrication regimes. Subsequently, the perturbation and frequency reduction methods are applied to determine the stiffness and damping coefficients of the bearing for various operational conditions. The results show that the dynamic force coefficients are strongly dependent on the operational conditions of the bearing, such as static load and rotating speed, as well as the perturbation frequency, for both lubrication regimes. The quantification of the injection pressure influence on the force coefficients of hybrid-lubricated thrust bearings is the main original contribution of this work.
Original languageEnglish
Article number114101
JournalJournal of Tribology
Volume145
Issue number11
Number of pages10
ISSN0742-4787
DOIs
Publication statusPublished - 2023

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