Feasibility of Influencing the Dynamic Fluid Film Coefficients of a Multirecess Journal Bearing by means of Active Hybrid Lubrication

Ilmar Santos, F. Y. Watanabe

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The main objective of this research project is the investigation of multirecess hydrostatic journal bearings with active hybrid (hydrostatic and hydrodynamic) lubrication. This paper gives a theoretical contribution to the modeling of this kind of bearing, combining computational fluid dynamics and control techniques. The feasibility of influencing the dynamic fluid film coefficients (stiffness and damping) by means of a controllable fluid injection into opposed bearing recesses is investigated. By controlling the pressure and flow injection using servo control systems, it is possible to obtain significant modifications of active hybrid forces, which can be useful while reducing vibration and stabilizing rotating machines.
Original languageEnglish
JournalJournal of the Brazilian Society of Engineering and Mechanical Sciences
Volume25
Issue number2
Pages (from-to)154-163
Publication statusPublished - 2003

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