Research on Friction and Lubrication: Surfaces, Bearings and Gears

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Mechanical Engineering".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 512

Special Issue Editors


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Guest Editor
School of Mechanical Engineering, Southeast University, Nanjing 211189, China
Interests: friction mechanism and modulation; thermal management; friction-induced vibration and noise

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Guest Editor
Department of Mechanics, Northwestern Polytechnical University, Xi’an 710072, China
Interests: lubrication mechanism of bearings
Special Issues, Collections and Topics in MDPI journals
School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China
Interests: fluid behavior and heat transfer of roller bearings in high-speed rotating power machinery

Special Issue Information

Dear Colleagues,

Friction is a vital factor that must be considered when designing complex mechanical systems and advanced mechanical parts because friction can heat the mechanical system, wear out the structure surface, and produce vibration and noise. Many significant achievements in the tribological design of mechanical systems have been made in the past few years, and many innovative and low-cost lubrication technologies have been in recent development. We launched this Special Issue to provide a learning and networking platform for our peers in academia and industry. Therefore, we are interested in articles that study the friction control mechanism of mechanical systems (including moving surfaces, bearings, gears, etc.), advanced lubrication technologies, friction noise suppression, and applications. Potential topics include, but are not limited to, the following:

  • Friction mechanism and modulation of mechanical systems;
  • Advanced fluid lubrication systems for mechanical equipment;
  • Frictional performance of mechanical parts with texture surface or coating;
  • Lubrication technology of mechanical systems in extreme conditions;
  • Modulation of friction-induced vibration and noise in mechanical systems;
  • Lubrication mechanism of bearings;
  • Friction and wear behaviors of bearings.

Original work that highlights the latest research and technical development is encouraged, but review papers and comparative studies are also welcome.

Dr. Zhiyong Wei
Prof. Dr. Zhongliang Xie
Dr. Wenjun Gao
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • friction
  • lubrication
  • friction-induced noise
  • surface texture
  • coating
  • tribological behaviors
  • wear

Published Papers (1 paper)

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Research

19 pages, 9897 KiB  
Article
Oil-Air Distribution Prediction Inside Ball Bearing with Under-Race Lubrication Based on Numerical Simulation
by Yaguo Lyu, Yuanhao Li, Can Li, Le Jiang and Zhenxia Liu
Appl. Sci. 2024, 14(9), 3770; https://doi.org/10.3390/app14093770 - 28 Apr 2024
Viewed by 271
Abstract
Oil/air two-phase flow distribution in the bearings is the basis for bearing lubrication status identification and precise thermal analysis of the bearing. In order to understand the fluid behavior inside the under-race lubrication ball bearing and obtain an accurate oil volume fraction prediction [...] Read more.
Oil/air two-phase flow distribution in the bearings is the basis for bearing lubrication status identification and precise thermal analysis of the bearing. In order to understand the fluid behavior inside the under-race lubrication ball bearing and obtain an accurate oil volume fraction prediction model. A numerical study of ball bearing with under-race lubrication is carried out to study oil-gas two-phase distribution inside the bearing, and the influence of several parameters is quantified, like bearing rotating speed, oil flow rate, oil viscosity, and oil density. The results indicate that the oil fraction in the bearing cavity between the inner and outer ring shows a periodic distribution along the circumference direction, and the period is the same as the number of under-race oil supply holes. Oil distribution alone radial direction is affected by the outer-ring-guiding cage and centrifugal force, leading to oil accumulation near the outer ring. Different bearing running conditions and oil characteristics do not change the oil distribution trend alone in circumference and radial direction, but the difference ratio. Finally, based on the numerical simulation results, a formula for the average oil volume fraction prediction in the bearing ring cavity is constructed. Full article
(This article belongs to the Special Issue Research on Friction and Lubrication: Surfaces, Bearings and Gears)
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