Results 21 to 30 of about 3,606 (307)

Investigation of Microflow Effects in Textures on Hydrodynamic Performance of Journal Bearings Using CFD Simulations

open access: yesLubricants, 2023
Adequately designed and positioned surface textures are recognized as a promising way to increase load-carrying capacity and reduce frictional losses of journal bearings.
Yujun Wang   +4 more
doaj   +1 more source

Theoretical Analysis and Optimum Design of High Speed Air Film Thrust Bearings

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2007
Hydrodynamic air film thrust bearings are widely used for very high speed, lightly loaded rotating machinery such as gas expander, compressor, gyroscope and business machines, etc. In the design of hydrodynamic air film thrust bearings, it is of cardinal
Hiromu HASHIMOTO   +2 more
doaj   +1 more source

Observations of acoustic emission in a hydrodynamic bearing [PDF]

open access: yes, 2009
Purpose - Numerous studies have been conducted in the field of acoustic emission (AE) technology applied to rotating machine fault diagnosis. Principally, most of the work to date has been focused on correlating AE activity to the defect condition on ...
Mba, David, Mirhadizadeh, S. A.
core   +1 more source

Turbulence Effects in Tilting Pad Journal Bearings: A Review

open access: yesLubricants, 2022
This paper reviews the current knowledge on turbulence effects in tilting pad journal bearings. Turbulence is becoming increasingly important in the design of hydrodynamic bearings due to the trend to increase power density in turbomachines and ...
Alberto Betti   +2 more
doaj   +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

The Tin Coatings Utilisation As Blood Contact Surface Modification In Implantable Rotary Left Ventricle Assist Device Religaheart Rot

open access: yesArchives of Metallurgy and Materials, 2015
Constructions of the mechanical-bearingless centrifugal blood pumps utilize different types of non-contact physical bearings, which allows to balance the forces that have an impact on the pump impeller, stabilizing its position in the pump house without ...
Kustosz R.   +7 more
doaj   +1 more source

Frequency Analysis of Hard Disk Drive Spindle System Supported by Hydrodynamic Bearings

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2007
Herringbone-grooved hydrodynamic bearings are now being applied to hard disk drive (HDD) spindle motors instead of ball bearings for demand for HDDs with larger storage capacities, faster access times, and reduced sizes.
Shohta TOHMA   +5 more
doaj   +1 more source

Development and Application of Integrated Aerodynamic Protuberant Foil Journal and Thrust Bearing in Turboexpander

open access: yesInternational Journal of Rotating Machinery, 2017
Foil bearing provides compliant support and moderate Coulomb friction for rotor-bearing system, which is conducive to stability and reliability of high speed rotating machinery.
Tianwei Lai   +4 more
doaj   +1 more source

An Experimental Investigation of Hydrodynamic Journal Bearing with Different Oil Grades [PDF]

open access: yesPort Said Engineering Research Journal, 2019
Journal bearings are known to be intrinsic components in different marine applications. They are regarded as the most instrumental means by which large loads could be transmitted at mean speed of rotation.
Nour Marey
doaj   +1 more source

Effects of Wear on Lubrication Performance and Vibration Signatures of Rotor System Supported by Hydrodynamic Bearings

open access: yesLubricants, 2023
Wear is one of the most common failures of hydrodynamic bearings. The main purpose of the present work was to investigate the effects of wear on lubrication performance and acquire efficient vibration signatures for fault diagnosis.
Yang Chen   +5 more
doaj   +1 more source

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