Book ChapterDOI
Water Lubricated Bearings
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TLDR
In this paper, a theoretical analysis of the stability of axial groove water lubricated bearings was performed using both the linearised perturbation method and nonlinear transient analysis to determine both the static and dynamic characteristics.Abstract:
The increasing ecological awareness and stringent requirements for environmental protection have led to the development of water lubricated bearings in many applications where oil was used as the lubricant. The chapter details the theoretical analysis to determine both the static and dynamic characteristics, including the stability (using both the linearised perturbation method and the nonlinear transient analysis) of multiple axial groove water lubricated bearings. Experimental measurements and computational fluid dynamics (CFD) simulations by the Tribology research group at Queensland University of Technology, Australia and Manipal Institute of Technology, India, have highlighted a significant gap in the understanding of the flow phenomena and pressure conditions within the lubricating fluid.read more
Citations
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Journal ArticleDOI
Determination of stiffness coefficients of hydrodynamic water-lubricated plain journal bearings
TL;DR: In this paper, the stiffness coefficients of plain journal bearings lubricated by water are derived and the relationship between stiffness coefficients and the load for bearings with different relative clearances, different length-to-diameter ratios and different rotational speeds are obtained.
Journal ArticleDOI
Load carrying capacity of misaligned hydrodynamic water-lubricated plain journal bearings with rigid bush materials
TL;DR: In this article, the authors analyzed the ultimate hydrodynamic load carrying capacity of water-lubricated plain journal bearings with rigid bush materials under misalignment effect, aiming to help designers find appropriate design parameters.
Journal ArticleDOI
Water-lubricated stern tube bearing - experimental and theoretical investigations of thermal effects
Michał Wodtke,Wojciech Litwin +1 more
TL;DR: In this paper, a water-lubricated stern tube bearing with axial grooves was used to investigate the thermal properties of bearing side zones through the grooves and found that the backflow temperature is higher than the supply temperature under the conditions of restricted axial flow.
Journal ArticleDOI
Water-Lubricated Sintered Bronze Journal Bearings—Theoretical and Experimental Research
Wojciech Litwin,Artur Olszewski +1 more
TL;DR: In this article, the authors present an attempt at researching the possibility of more extensive use of other stiff bush bearings, represented by bronze bush bearings and the aim of the research was to investigate stiff metal bearings, as solutions offering theoretical...
Journal ArticleDOI
Regulating microstructures of interpenetrating polyurethane-epoxy networks towards high-performance water-lubricated bearing materials
Yu Ping,Guitao Li,Ligang Zhang,Fuyan Zhao,Shoubing Chen,Andrey I. Dmitriev,Andrey I. Dmitriev,Ga Zhang +7 more
TL;DR: In this article, the structural evolution and mechanical properties of polyurethane/epoxy interpenetration networks (PU/EP IPNs) as a function of PU content were comprehensively studied.
References
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Journal ArticleDOI
Film pressure distribution in water-lubricated rubber journal bearings:
TL;DR: In this paper, measurements of fluid film pressures were made on water-lubricated rubber journal bearings and the behavior of the bearings was theoretically investigated using computational fluid dynamics and experimental results showed that they operate in the regime of mixed lubrication.
Journal ArticleDOI
Analysis of water-lubricated journal bearings with multiple axial grooves:
TL;DR: In this paper, the steady state and dynamic characteristics including whirl instability of water-lubricated journal bearings having three axial grooves are obtained theoretically. And the dynamic behaviour in terms of stiffness and damping coefficients of film and stability are found using a first-order perturbation method.
Journal ArticleDOI
Water-lubricated bearings of ship propeller shafts - problems, experimental tests and theoretical investigations
TL;DR: In this article, the main problem is intensive wear of bush material, occurring in certain cases, and it very often results from errors of improper design and machining and mounting operations, resulting from low viscosity of water used as a lubricating medium.
Journal ArticleDOI
Load-carrying capability of water-lubricated ceramic journal bearings
Peter Andersson,Pekka Lintula +1 more
TL;DR: In this article, the possibilities of using advanced ceramics in water-lubricated journal bearings were studied by performing tests on journal bearings lubricated with water, and it can be concluded that water-driven journal bearings utilizing silicon carbide against itself offer good performance.
Journal ArticleDOI
Stability of water-lubricated, hydrostatic, conical bearings with spiral grooves for high-speed spindles
TL;DR: In this article, the stability of water-lubricated, hydrostatic, conical bearing with spiral grooves for high-speed spindles is investigated theoretically and experimentally, and it was found that the proposed bearing is very stable at high speeds and theoretical predictions show good agreement with experimental data.