scholarly journals Effect of surface texturing on hydrodynamic lubrication at various temperatures

AIP Advances ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 055301
Author(s):  
Huichao Gao ◽  
Xinyuan Chen
Keyword(s):  
Hydrodynamic Lubrication ◽  
Surface Texturing ◽  
Effect Of Surface

The effect of surface texturing in soft elasto-hydrodynamic lubrication

2009 ◽  
Vol 42 (2) ◽  
pp. 284-292 ◽  
Author(s):  
A. Shinkarenko ◽  
Y. Kligerman ◽  
I. Etsion
Keyword(s):  
Hydrodynamic Lubrication ◽  
Surface Texturing ◽  
Effect Of Surface

Hydrodynamic Lubrication of Conformal Contacting Surfaces With Parabolic Grooves

2012 ◽  
Vol 134 (1) ◽  
Author(s):  
Yonghong Fu ◽  
Jinghu Ji ◽  
Qinsheng Bi
Keyword(s):  
Hydrodynamic Lubrication ◽  
Surface Texturing ◽  
Orientation Angle ◽  
Groove Depth ◽  
Groove Width ◽  
Hydrodynamic Effect ◽  
Geometrical Parameters ◽  
Average Pressure ◽  
Minimum Film Thickness ◽  
Effect Of Surface

The effect of surface texturing in the form of parabolic grooves on the hydrodynamic lubrication properties is investigated in this paper. Numerical simulation of the pressure distribution of lubricant between a textured slider and a smooth, moving slider has been performed. The evaluation criterion of hydrodynamic effect of dimensionless average pressure is calculated and presented with the variation of minimum film thickness, groove width, groove depth, spacing and orientation angle. Optimum values of geometrical parameters such as the dimensionless groove depth, spacing and orientation angle are obtained which correspond to maximum average pressure. It is also noted that the average pressure increases monotonically with increasing groove width. The results show that the hydrodynamic effect can be improved by employing optimized surface texturing design.

Numerical optimization of surface texture for improved tribological performance of journal bearing at varying operating conditions

2018 ◽  
Vol 70 (9) ◽  
pp. 1608-1618 ◽  
Author(s):  
Ali Usman ◽  
Cheol Woo Park
Keyword(s):  
Journal Bearing ◽  
Hydrodynamic Lubrication ◽  
Surface Texturing ◽  
Tribological Performance ◽  
Operating Conditions ◽  
Content Type ◽  
Load Carrying ◽  
Recent Developments ◽  
Effect Of Surface ◽  
Generalized Reynolds Equation

Purpose Journal bearings are used in numerous rotary machines. The load carrying capacity and friction of a bearing have been major concerns in design. Recent developments in surface texturing have showed potential outcomes to improve the tribological characteristics of mating surfaces. This study aims to investigate surface textures, which are transverse to the sliding direction, for frictional response of the journal bearing. Design/methodology/approach A hydrodynamic lubrication model is considered to evaluate the effect of surface texturing on the performance of a journal bearing at varying operating conditions. The two-dimensional generalized Reynolds equation, coupled with mass-conserving Elrod cavitation algorithm, is solved to evaluate texture-induced variations in tribological performance parameters. Findings Results have showed remarkable improvements in frictional response. Moreover, micro-textures on the journal surface alter the cavitation response and film-reformation in the hydrodynamic conjunction of the plain bearing. Originality/value Operating condition-based comprehensive exhaustive optimization of texture geometry is performed to generate widespread conclusion.

Effectiveness of multi-shape laser surface texturing in the reduction of friction under lubrication regime

2016 ◽  
Vol 68 (1) ◽  
pp. 116-124 ◽  
Author(s):  
Dawit Zenebe Segu ◽  
Pyung Hwang
Keyword(s):  
Hydrodynamic Lubrication ◽  
Surface Texturing ◽  
Laser Surface ◽  
Laser Surface Texturing ◽  
Textured Surface ◽  
Content Type ◽  
Laser Ablation Process ◽  
Specific Formula ◽  
Steel Surfaces ◽  
Lubrication Conditions

Purpose – The purpose of this paper is to investigate and discuss the effect of multi-shape laser surface texturing (LST) steel surfaces on tribological performance. Design/methodology/approach – The textured surface with some specific formula arrays was fabricated by laser ablation process by combining patterns of circles and triangles, circles and squares and circles and ellipses. The tribological test was performed by a flat-on-flat tribometer under dry and lubrication conditions, and results were compared with that of untextured surface. Findings – The results showed that the textured surface had better friction coefficient performance than the untextured surface due to hydrodynamic lubrication effect. Through an increase in sliding speed, the beneficial effect of LST performance was achieved under dry and lubrication conditions. Originality/value – This paper develops multi-shape LST steel surfaces for improving the friction and wear performance under dry and lubrication conditions.

Effect of Surface Texturing on Lubrication Film Formation within Non-Conformal Contacts

2009 ◽  
pp. 84-85
Author(s):  
I. Křupka ◽  
R. Poliščuk ◽  
M. Vaverka ◽  
M. Hartl ◽  
M. Vrbka ◽  
...  
Keyword(s):  
Film Formation ◽  
Surface Texturing ◽  
Lubrication Film ◽  
Effect Of Surface
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