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Keywords: Journal bearings
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Journal Articles
Article Type: Research Papers
J. Tribol. May 2023, 145(5): 054301.
Paper No: TRIB-22-1309
Published Online: January 17, 2023
..., and in transportation machinery such as automobiles and aircraft. For example, double row tapered roller bearings are often used as axle bearings in railway vehicles, which require high reliability. bearings journal bearings rolling rolling element bearings rolling fatigue Copyright © 2023 by ASME...
Journal Articles
Article Type: Research Papers
J. Tribol. May 2023, 145(5): 054101.
Paper No: TRIB-22-1006
Published Online: January 5, 2023
...Chunxing Gu; Li Dai; Di Zhang In order to explore the influence of different acceleration and deceleration forms on the bearing performance during acceleration and deceleration, an isothermal and mixed lubrication model for journal bearings was established. In this model, the fluid mechanics...
Journal Articles
Accepted Manuscript
Article Type: Research Papers
J. Tribol.
Paper No: TRIB-21-1498
Published Online: January 5, 2023
...: censhaoqi@zzu.edu.cn bearings fluid film lubrication hydrodynamic lubrication journal bearings thermoelastohydrodynamic lubrication viscosity Accepted Manuscript Not Copyedited Journal of Tribology. Received October 25, 2021; Accepted manuscript posted December 29, 2022. doi:10.1115/1.4056631...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2023, 145(1): 011801.
Paper No: TRIB-22-1005
Published Online: October 7, 2022
...-darmstadt.de bearings fluid-film lubrication hydrodynamic lubrication hydrostatic lubrication journal bearings rotordynamic seals References [1] Childs , D. W. , 1983 , “ Finite-Length Solutions for Rotordynamic Coefficients of Turbulent Annular Seals ,” ASME J. Lubr...
Journal Articles
Article Type: Technical Briefs
J. Tribol. November 2022, 144(11): 114502.
Paper No: TRIB-22-1057
Published Online: July 29, 2022
... support. The distribution of hydrodynamic pressure inside the bearing can be obtained by solving the Reynolds equation. Improving the efficiency of solving the Reynolds equation plays an essential role in the design and analysis of journal bearings. A numerical model has been developed to support...
Journal Articles
Article Type: Research Papers
J. Tribol. November 2022, 144(11): 111804.
Paper No: TRIB-21-1627
Published Online: July 12, 2022
... fluid film lubrication hydrodynamic lubrication hydrostatic lubrication journal bearings seals Allianz Industrie Forschung 10.13039/501100002723 19225/BG 2 Bundesministerium für Wirtschaft und Energie 10.13039/501100006360 03ET7052B In modern turbomachinery...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2022, 144(10): 101801.
Paper No: TRIB-22-1043
Published Online: May 20, 2022
... with experimental trends. Fully hydrodynamic lubrication is predicted over a large range of load numbers for minimum oscillation amplitudes of approximately π/2 radians. hydrodynamic lubrication journal bearings Cylindrical fluid-film bearing systems subjected to non-reversing loading under oscillatory...
Journal Articles
Article Type: Research Papers
J. Tribol. August 2022, 144(8): 081603.
Paper No: TRIB-21-1537
Published Online: March 7, 2022
...Nathan Hess; Lizhi Shang This paper presents a machine learning neural network capable of approximating pressure as the distributive result of elastohydrodynamic (EHD) effects for a journal bearing at steady state. Design of efficient, reliable fluid power pumps and motors requires accurate models...
Journal Articles
Article Type: Research Papers
J. Tribol. August 2022, 144(8): 081803.
Paper No: TRIB-21-1486
Published Online: February 28, 2022
... lubrication journal bearings Ministry of Education and Science of the Russian Federation 10.13039/501100003443 MD - 129.2020.8. Most of the work in the field of active bearings is associated with electromagnetic bearings [ 1 – 5 ]. A comparative study of adaptive and non-adaptive...
Journal Articles
Article Type: Research Papers
J. Tribol. August 2022, 144(8): 081802.
Paper No: TRIB-21-1489
Published Online: February 25, 2022
...Jiaojiao Ma; Chao Fu; Weidong Zhu; Kuan Lu; Yongfeng Yang Misalignment is common in hydrodynamic journal bearings and the causes of it can be diversified, making the lubrication performance exhibits stochasticity. Lubricant viscosity often heavily depends on temperature, which may vary during...
Journal Articles
Article Type: Technical Briefs
J. Tribol. June 2022, 144(6): 064501.
Paper No: TRIB-21-1463
Published Online: February 8, 2022
... problems (LCPs), the coupling of film thickness h and density ratio θ disappeared. The modified equation achieved a new discrete scheme that ensured a complete second-order-accurate central difference scheme for the full film region, avoiding a hybrid-order-accurate discrete scheme. A journal-bearing case...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2022, 144(7): 071802.
Paper No: TRIB-21-1318
Published Online: December 22, 2021
..., some rotor dynamic effects that are not considered in the mathematical model, such as misalignment. Another advantage of using AMBs is to set the shaft at a specific position inside the journal bearing. So, for experimental and numerical tests, the journal static position was maintained initially...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2022, 144(7): 071801.
Paper No: TRIB-21-1263
Published Online: December 22, 2021
...Dongil Shin; Junho Suh; Alan B. 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 the Morton effect (ME), is caused by non-uniform viscous...
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
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...