Next Article in Journal
Stepwise Luneburg Lens for Bloch Surface Waves
Previous Article in Journal
Identification of Operating Parameters Most Strongly Influencing the Jetting Performance in a Piezoelectric Actuator-Driven Dispenser
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Appl. Sci. 2018, 8(2), 244; https://doi.org/10.3390/app8020244

Study on Lubrication Performance of Journal Bearing with Multiple Texture Distributions

1,2
,
1,2
,
1,* and 1,3,*
1
State Key Laboratory of Engine, Tianjin University, Tianjin 300072, China
2
Renai College, Tianjin University, Tianjin 301636, China
3
College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
*
Authors to whom correspondence should be addressed.
Received: 2 January 2018 / Revised: 1 February 2018 / Accepted: 1 February 2018 / Published: 6 February 2018
(This article belongs to the Section Mechanical Engineering)
Full-Text   |   PDF [2081 KB, uploaded 6 February 2018]   |  

Abstract

The lubrication performance of journal bearings with different sorts of uniformly distributed micro-spherical textures are studied in this paper. Geometries and dynamic models of journal bearings with pure concave/convex textures are developed. The validity of the proposed models is verified against the oil film pressure distribution from the literature. The effects of geometry parameters (the texture depth and the area density) on the load capacity and the friction coefficient of the bearing are analyzed and discussed. Results indicate that: the bearing load capacity is reduced by the concave spherical texture, but enhanced by the convex texture; both the concave and convex textures have a very slight influence on the friction coefficient. Aiming to further improve the bearing lubrication performance, a novel concave-convex composite texture is proposed and modelled. Results show that the composite texture can significantly improve both the load capacity and the friction coefficient, because the concave spherical segments among the convex ones protect the oil film from rupture near the main load region. The oil film region is expanded by the composite texture as well. View Full-Text
Keywords: micro-spherical texture; concave texture; convex texture; journal bearing; load capacity; friction coefficient; oil film micro-spherical texture; concave texture; convex texture; journal bearing; load capacity; friction coefficient; oil film
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Wang, J.; Zhang, J.; Lin, J.; Ma, L. Study on Lubrication Performance of Journal Bearing with Multiple Texture Distributions. Appl. Sci. 2018, 8, 244.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top