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Keywords: journal bearings
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Journal Articles
Accepted Manuscript
Article Type: Research Papers
J. Tribol.
Paper No: TRIB-21-1399
Published Online: November 23, 2021
...Shanshan Wei; Yuri Kligerman; Roman Goltsberg; Izhak Etsion A Computational Fluid Dynamics (CFD) analysis of two-phase flow was used to obtain the distribution of lubricant in a journal bearing, including inlet tube and groove. It was found that for an incomplete starting film, the oil spread...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2022, 144(4): 041806.
Paper No: TRIB-21-1055
Published Online: November 12, 2021
...Artur Schimpf; Markus Ortelt; Helge Seiler; Yandong Gu; Alexander Schwarzwälder; Martin Böhle This study describes experimental results using carbon fiber-reinforced carbon (C/C) material for porous journal bearings under static conditions. Exerted radial forces of up to 90 N, a supply pressure...
Journal Articles
Article Type: Research Papers
J. Tribol. March 2022, 144(3): 031604.
Paper No: TRIB-21-1304
Published Online: November 9, 2021
... of the pump pressure rise, is entirely supported by the hybrid journal bearings. Lubrication of these is accomplished using low viscosity aviation fuel, which makes the design and analysis of journal bearings particularly challenging. Furthermore, considering the operating conditions of these journal bearings...
Journal Articles
Accepted Manuscript
Article Type: Research Papers
J. Tribol.
Paper No: TRIB-21-1263
Published Online: October 8, 2021
...Dongil Shin; Junho Suh; Alan Palazzolo This paper investigates the journal asymmetric temperature induced thermal bow vibration of a rotor, as supported by a flexure pivot journal bearing (FPJB). Thermal bow induced vibration, known as Morton effect (ME) is caused by non-uniform viscous heating...
Journal Articles
Article Type: Research Papers
J. Tribol. June 2022, 144(6): 061701.
Paper No: TRIB-21-1088
Published Online: September 8, 2021
... . 14 02 2021 16 08 2021 17 08 2021 08 09 2021 multi-stage running-in running-in quality friction coefficient phase trajectory journal bearings sliding National Natural Science Foundation of China 10.13039/501100001809 51705216 52005226 Natural Science...
Journal Articles
Article Type: Research Papers
J. Tribol. June 2022, 144(6): 061802.
Paper No: TRIB-20-1504
Published Online: September 3, 2021
... ournal of T ribology . 26 11 2020 11 08 2021 11 08 2021 03 09 2021 journal bearings thermoelastohydrodynamic lubrication The Morton effect (ME) occurs most frequently in high-performance, high-speed machines with rotors having large overhung masses, and supported...
Journal Articles
Article Type: Research Papers
J. Tribol. June 2022, 144(6): 061801.
Paper No: TRIB-20-1503
Published Online: September 3, 2021
...Jongin Yang; Alan Palazzolo Uncertainty in mixing coefficients (MCs) for estimating pad leading-edge film temperature in tilt pad journal bearings reduces the reliability of predicted characteristics. A three-dimensional hybrid between pad (HBP) model, utilizing computational fluid dynamics (CFD...
Journal Articles
Article Type: Research Papers
J. Tribol. May 2022, 144(5): 051802.
Paper No: TRIB-21-1214
Published Online: August 3, 2021
...S. Boedo This paper describes a computationally efficient, finite element implementation of a generalized short bearing (GSB) formulation to account for mass conservation in cavitated bearing regions. The method is applied to a set of examples representing partial and full journal bearings under...
Journal Articles
Article Type: Research Papers
J. Tribol. May 2022, 144(5): 051801.
Paper No: TRIB-21-1062
Published Online: August 3, 2021
...-rate, elastic deformation of the bearing, film thickness, fluid pressure, and contact pressure are calculated by the numerical model. Furthermore, the calculated results of the misaligned journal bearing are compared with those of the aligned journal bearing. The results show that the distributions...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2022, 144(4): 041801.
Paper No: TRIB-21-1131
Published Online: June 29, 2021
... conical bearing spiral grooves ferrofluid FEA bearing design and technology fluid film lubrication journal bearings lubricants rheology surface properties and characterization In this period of fast technological developments, simplification of complex problems and cost-effective...
Journal Articles
Article Type: Research Papers
J. Tribol. March 2022, 144(3): 031801.
Paper No: TRIB-21-1106
Published Online: May 25, 2021
... journal bearing. It is compared with the multigrid and the fixed mesh methods and found to be very effective in improving computational efficiency. References [1] Yamada , H. , Taura , H. , and Kaneko , S. , 2017 , “ Static Characteristics of Journal Bearings With Square Dimples...
Journal Articles
Article Type: Research Papers
J. Tribol. December 2021, 143(12): 121804.
Paper No: TRIB-20-1483
Published Online: March 29, 2021
... vibration levels in the rotor. This paper investigates the influence of the tilting pad journal bearing (TPJB)’s pivot design on the severity and instability speed range of ME vibration. Simulations are conducted with two different types of pivots: cylindrical (CYL) and spherical (SPH), which produce...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2021, 143(10): 101801.
Paper No: TRIB-20-1399
Published Online: February 5, 2021
... and technology coatings hydrodynamic lubrication journal bearings surface properties and characterization wear Due to its superior wear properties when compared to metallic coatings, polytetrafluoroethylene (PTFE) came into focus for the application in hydrodynamic plain bearings as early...
Journal Articles
Article Type: Technical Briefs
J. Tribol. August 2021, 143(8): 084501.
Paper No: TRIB-20-1168
Published Online: November 20, 2020
... and critical component in these systems is the lubricated journal bearing, subjected to wear fault by abrasive removing of material in its inner wall, mainly during run-ups and run-downs. In extreme conditions, wear faults can cause unexpected shutdowns in rotating systems. Consequently, advanced condition...
Journal Articles
Article Type: Research Papers
J. Tribol. August 2021, 143(8): 081801.
Paper No: TRIB-20-1209
Published Online: November 20, 2020
...Abhishek Kumar; Satish C. Sharma To improve the performance accuracy of a conical journal bearing system, the surface error needs to be considered in the analysis since a tiny difference in dimensional values can alter the performance; the consideration of surface error may degrade the performance...
Journal Articles
Article Type: Research Papers
J. Tribol. June 2021, 143(6): 061802.
Paper No: TRIB-20-1325
Published Online: October 27, 2020
... A . Email: sxbeme@rit.edu Contributed by the Tribology Division of ASME for publication in the J ournal of T ribology . 19 07 2020 15 09 2020 15 09 2020 27 10 2020 bearing design and technology elastohydrodynamic lubrication journal bearings Conformal...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2021, 143(4): 041803.
Paper No: TRIB-20-1202
Published Online: September 28, 2020
... . 08 05 2020 07 08 2020 07 08 2020 28 09 2020 elastohydrodynamic lubrication fluid film lubrication hydrodynamic lubrication journal bearings In recent years [ 1 ], with the increase in environmental awareness and pollution prevention, much more attention is being...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2021, 143(4): 041802.
Paper No: TRIB-20-1258
Published Online: September 28, 2020
...Clément Eberhardt; Robin Kurth; Christian Kraft; Hubert Schwarze; Thomas Päßler; Markus Bergmann; Matthias Putz The replacement of damaged journal bearings in forming machines eventuates in very high personal and material costs as well as long-term downtime. Moreover, new discontinuous forming...
Journal Articles
Article Type: Research Papers
J. Tribol. March 2021, 143(3): 031802.
Paper No: TRIB-19-1357
Published Online: September 21, 2020
...Dongil Shin; Alan B. Palazzolo This paper investigates the influence of misaligned journal bearing effects on the thermally induced rotor instability (Morton effect “ME”) problem. The Morton effect is caused by uneven viscous heating of the journal in a fluid film bearing, which causes thermal...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2021, 143(1): 011802.
Paper No: TRIB-19-1340
Published Online: August 3, 2020
...Jongin Yang; Alan Palazzolo Reynolds based thermo-elasto-hydrodynamic (TEHD) simulations of tilting pad journal bearings (TPJBs) generally provide accurate results; however, the uncertainty of the pad’s leading edge thermal boundary conditions causes uncertainty of the results. The highly complex...