Numerical optimization of gourd-shaped surface texture and experiment of tribological performance

Purpose This paper aims to improve the tribological performance of grease-lubricated spherical plain bearings (SPBs) under heavy load, dimple-type textures were prepared by laser on the outer surface of the inner ring. The influence of roughness parameters of a textured surface on reducing friction coefficient and temperature rise was also explored. Design/methodology/approach This study adopts a laser processing method to fabricate dimple-type textures. Three-dimensional roughness parameters were used to characterize the textured surfaces. The friction coefficients of five SPBs with surface texture and one original commercially available SPB without surface texture under different nominal loads were measured on a self-established test rig. The data of temperature rise were obtained by nine embedded thermal couples. Findings The results indicate that SPBs with textures generally exhibit lower friction coefficients than the original SPB without textures. The dimple depth has a significant influence on improving the tribological performance, which coincides with the analysis by surface roughness parameters. A textured surface with negative Ssk and high Vvc has the minimum temperature rise. Originality/value As it is too difficult to arrange sensors into heavy-load SPBs, there are few reports about the temperature characteristics. Through nine embedded thermal couples, the distribution of temperature rise on the inner ring of SPBs was given in this study. The positive effect of surface texture on reducing temperature rise and friction coefficient was verified, which is beneficial for the design of heavy-load SPBs.

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A Review of Surface Texture of Tribological Interfaces

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.37-38.41 ◽

2010 ◽

Vol 37-38 ◽

pp. 41-45 ◽

Cited By ~ 3

Author(s):

Zhi Wei Wang ◽

Mei Wei Chen ◽

Jian Wei Wu ◽

Hai Hui Zheng ◽

Xiao Feng Zheng

Keyword(s):

Modeling And Simulation ◽

Surface Texture ◽

Review Paper ◽

Tribological Performance ◽

Current Status ◽

Comprehensive View ◽

Lubrication Performance ◽

Mechanical Components ◽

Friction And Lubrication

Surface texture of tribological interfaces has the potential to improve friction and lubrication performance of various mechanical components. This review paper emphasizes on the current status of the research of surface texture, including the features, the effects on tribological performance, the forming techniques, and the modeling and simulation of surface texture. It is intended to help readers to gain a more comprehensive view on surface texture of tribological interfaces.

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Study on influence of Koch snowflake surface texture on tribological performance for marine water-lubricated bearings

Tribology International ◽

10.1016/j.triboint.2018.08.015 ◽

2019 ◽

Vol 129 ◽

pp. 29-37 ◽

Cited By ~ 18

Author(s):

Tie Chang ◽

Zhiwei Guo ◽

Chengqing Yuan

Keyword(s):

Surface Texture ◽

Tribological Performance ◽

Marine Water ◽

Koch Snowflake

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Numerical Optimization of Surface Texture for Hydrophobic Textured Slider Bearing

Journal of Advanced Research in Fluid Mechanics and Thermal Sciences ◽

10.37934/arfmts.71.2.160169 ◽

2020 ◽

Vol 71 (2) ◽

pp. 160-169

Author(s):

Mohammad Tauviqirrahman ◽

Toni Prahasto ◽

Mohamad Lutfi Assaidiky ◽

Muchammad Muchammad

Keyword(s):

Surface Texture ◽

Numerical Optimization ◽

Slider Bearing

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Optimization of Proximity Recording Air Bearing Sliders in Magnetic Hard Disk Drives

Journal of Tribology ◽

10.1115/1.555350 ◽

1999 ◽

Vol 122 (1) ◽

pp. 257-259 ◽

Cited By ~ 8

Author(s):

Matthew A. O’Hara ◽

Yong Hu ◽

David B. Bogy

Keyword(s):

Numerical Optimization ◽

Tribological Behavior ◽

Contact Stiffness ◽

Hard Disk Drives ◽

Tribological Performance ◽

Air Bearing ◽

Disk Drives ◽

Bearing Surface ◽

Magnetic Hard Disk ◽

Made In

The object of this paper will be to optimize the contact stiffness (CS) of an existing proximity recording air bearing surface (ABS). The CS is a measure of the slider’s increase in contact force with increase in slider/disk interference. By minimizing this, the amount of force transmitted through the slider at the interface is minimized. This should, in turn, minimize the amount of wear, improving the tribological performance. Comparisons of the pre- and post-optimized slider have been made. In combination with research that demonstrates the ability of the CS parameter to predict tribological behavior (Hu et al., ASME J. Tribol., 120, pp. 272–279) this paper demonstrates the feasibility of numerical optimization of the tribological behavior of proximity recording air bearing sliders. [S0742-4787(00)03201-X]

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Enhancing Tribological Conditions in Tube Hydroforming by Using Textured Tubes

Journal of Tribology ◽

10.1115/1.2197849 ◽

2006 ◽

Vol 128 (3) ◽

pp. 674-676 ◽

Cited By ~ 7

Author(s):

Gracious Ngaile ◽

Mark Gariety ◽

Taylan Altan

Keyword(s):

Significant Influence ◽

Surface Texture ◽

Electrical Discharge ◽

Tube Hydroforming ◽

Tribological Performance ◽

Tube Surface ◽

Textured Surfaces ◽

Interface Pressure ◽

Interface Friction ◽

Treatment Methods

The effects of textured tubes on the tribological performance in tube hydroforming (THF) are discussed. Textured surfaces, namely sand blasted, knurled, electrical discharge machined (EDM), and as rolled surfaces, were tested under various interface pressure conditions. Sand blasted textured tubes were found to have the best tribological performance. The study has demonstrated that the increase in the interface pressure between the tube and the die can result in either lower or higher interface friction depending on the surface texture conditions. The study has also shown that different surface texture treatment methods can alter the hardness of the tube surface with significant influence on the tribological performance.

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