Results 21 to 30 of about 29,935 (302)

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

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

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

Numerical simulation and experimental study of thrust air bearings with multiple orifices [PDF]

open access: yes, 2013
http://dx.doi.org/10.1016/j.ijmecsci.2013.03.006The objective of this paper is to provide a numerical simulation and an experimental study in order to assess stiffness and damping characteristics of thrust air bearings with multiple orifices.
A. Ambari   +7 more
core   +1 more source

Performance analysis of Pareto optimal bearings subject to surface error variations [PDF]

open access: yes, 2010
A Pareto optimization study was carried out on a flat pad aerostatic bearing design. Some of the Pareto optimal configurations were then subjected to surface profiling errors including tilt, concavity, convexity and waviness and key performance ...
Barrans, Simon   +7 more
core   +1 more source

Theoretical and Numerical Investigations on Static Characteristics of Aerostatic Porous Journal Bearings

open access: yesMachines, 2022
To investigate the static characteristics of aerostatic journal bearings with porous bushing, the flow model—in which the compressibility of lubricating gas is considered—is established based on the Reynolds lubrication equation, Darcy equation for ...
Yandong Gu   +4 more
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

A Comparison of Design Methodologies for Journal Bearings under Pulsatile Loads

open access: yes, 2011
The paper expands the work by Kinnear and Weston[1] on squeeze film bearing design to the general case and compares the revised methodology with classical bearing design[2,3,4] and hybrid bearing design[5].
Weston, W.   +8 more
core   +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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