Results 21 to 30 of about 30,041,590 (273)

Study on the performance of journal bearings in different lubricants by CFD and FSI method with thermal effect and cavitation

open access: yesMATEC Web of Conferences, 2018
This paper used a new transient computational fluid dynamics and fluid–structure interaction method to investigate the journal bearing performance with the effect of thermal and cavitation, to reveal the performance of journal bearing in different ...
Li Hulin   +4 more
doaj   +1 more source

Error Averaging Effect of Hydrostatic Journal Bearings Considering the Influences of Shaft Rotating Speed and External Load

open access: yesIEEE Access, 2019
Hydrostatic journal bearings possess superior motion accuracy owing to their error averaging effect and often work under different speeds and external loads in precision applications.
Yongtao Zhang   +4 more
doaj   +1 more source

Modelling and Simulation of Aerodynamic Cylindrical Bearings Using ANSYS Hydrodynamic Bearing Element Types

open access: yesVehicles, 2023
Modern power engine concepts and environmental restrictions demand oil-free lubrication of rotors, for example, by gas bearings. However, the stiffness and damping properties ruling the rotor’s dynamics are poorly documented for aerodynamic bearings and ...
Katrin Baumann, Hermann Freund
doaj   +1 more source

Evaluation and Application of an Engineering Calculation Method of the Static Performance of an Aerostatic Journal Bearing with Multiple Orifice-Type Restrictors

open access: yesLubricants, 2022
A simplified calculation method is evaluated to calculate the static performance of an aerostatic journal bearing with multiple orifice-type restrictors.
Yangong Wu   +4 more
doaj   +1 more source

Stability Threshold of Herringbone Grooved Aerodynamic Journal Bearings with External Stiffness and Damping Elements

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2013
Herringbone grooved aerodynamic journal bearings have better stability characteristics than plane aerodynamic journal bearings. In addition, the use of flexibly supported bearings is one of the efficient way to improve the bearing stability. Therefore,
Jun TOMIOKA, Norifumi MIYANAGA
doaj   +1 more source

Controlled porosity alumina structures for ultra-precision hydrostatic journal bearings [PDF]

open access: yes, 2010
A series of fine-grade alumina powders has been used in combination with maize starch granules to produce porous structures for porous hydrostatic journal- bearing applications. A comprehensive series of tests was conducted to characterize porosity in
John Corbett   +6 more
core   +1 more source

Development of porous ceramic air bearings [PDF]

open access: yes, 2001
Porous air bearings enjoy some important advantages over conventional air bearing types such as increased load carrying capacity, higher stiffness and improved damping.
Roach, Christopher James
core   +6 more sources

Operating characteristics of heavy loaded cylindrical journal bearing with variable axial profile

open access: yesMaterials Research, 2005
During the operation of turbounit its bearings displace as a result of heat elongation of bearings supports. It changes the static deflection line of rotor determined during assembly of the turbounit, causing an increase in the stresses on the bearing ...
Stanislaw Strzelecki
doaj   +1 more source

Unbalance Response Analysis of a Spindle Supported on Gas Bearings: A Comparison between Different Approaches

open access: yesLubricants, 2022
Gas journal bearings are widely employed in high-speed spindles for the micromachining industry. Compared to their oil and rolling counterparts, gas bearings have a longer life span, lower friction and a lower level of noise.
Federico Colombo   +4 more
doaj   +1 more source

Application of the Optimization Methods to the Search of Marine Propulsion Shafting Global Equilibrium in Running Condition

open access: yesPolish Maritime Research, 2019
Full-film hydrodynamic lubrication of marine propulsion shafting journal bearings in running condition is discussed. Considerable computational difficulties in non-linear determining the quasi-static equilibrium of the shafting are highlighted.
Ursolov Aleksandr   +2 more
doaj   +1 more source

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