Journal ArticleDOI
Numerical investigation on the influence of surface texture on the performance of hydrodynamic journal bearing
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TLDR
In this article, the influence of different forms of surface texture on finite journal bearing has been investigated in the form of negative texture (micro cavities) at different locations of bearing surface.Abstract:
Many researchers have adopted various techniques for improving the performance characteristics of journal bearing. Apart from other parameters, incorporation of different forms of surface texture (sinusoidal, dimple, spherical etc.) on bearing or shaft also helps to increase the load carrying capacity and reduce the friction coefficient etc. in the journal bearing. Present study investigates the influence of different forms of surface texture on finite journal bearing which has been considered in the form of negative texture (micro cavities) at different locations of bearing surface. The Governing equations are solved numerically through finite difference approach for analysis of texture effects on bearing characteristics. It has been observed that the presence of micro cavities at different locations of bearing surface help in enhancing the bearing performance. It has also been found that the negative half wave texture enhances the bearing performance more in comparison to full wave texture on bearing surface.read more
Citations
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Journal ArticleDOI
Hydrodynamic lubrication of textured surfaces: A review of modeling techniques and key findings
TL;DR: In this paper, the authors provide a comparative summary of different modeling techniques for fluid flow, cavitation and micro-hydrodynamic effects for surface texturing, and provide the key findings.
Journal ArticleDOI
Recent development on surface texturing in enhancing tribological performance of bearing sliders
TL;DR: In this paper, a critical review of surface texturing over the past decades is presented, highlighting design, optimization and fabrication of surface texture, and their effects on tribological performance in terms of friction and load bearing capacity under different lubrication regimes.
Journal ArticleDOI
Lubricating a bright future: Lubrication contribution to energy saving and low carbon emission
TL;DR: In this article, the authors reviewed the recent progresses and challenges associated with some novel lubrication techniques that include novel surface treatment (such as texturing, high-performance nanocomposite coatings, adapting coating), tribology design (solid and liquid lubrication), energy-conserving engine oil and novel lubricants and formula ( such as ionic liquids, low S, P content additives) which are to be adopted to enhance the fuel efficiency to achieve energy saving and low carbon emission.
Journal ArticleDOI
Comparative analysis of textured and grooved hydrodynamic journal bearing
TL;DR: In this paper, the influence of spherical texture and micro-grooving (longitudinal and transverse) on friction coefficient and average temperature of journal bearing at low and high eccentricity ratios was analyzed.
Journal ArticleDOI
An overview of geometrical parameters of surface texturing for piston/cylinder assembly and mechanical seals
TL;DR: In this article, the effects of surface texturing geometrical parameters on the performance of two applications piston ring/cylinder assembly and mechanical seals were investigated, including depth, diameter, depth to diameter ratio, shape and density of dimples.
References
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Journal ArticleDOI
An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication
Nadir Patir,H. S. Cheng +1 more
Journal ArticleDOI
State of the art in Laser Surface Texturing
TL;DR: In this paper, the authors present the state of the art in LST and the potential of this technology in various lubricated applications like mechanical seals, piston rings and thrust bearings.
Journal ArticleDOI
Application of Average Flow Model to Lubrication Between Rough Sliding Surfaces
Nadir Patir,H. S. Cheng +1 more
Proceedings ArticleDOI
State of the Art in Laser Surface Texturing
TL;DR: Laser Surface Texturing (LST) is probably the most advanced surface texturing technique as mentioned in this paper and it produces a very large number of micro-dimples on the surface and each of these microdimples can serve either as a micro-hydrodynamic bearing in cases of full or mixed lubrication.
Journal ArticleDOI
A Laser Surface Textured Parallel Thrust Bearing
TL;DR: In this article, the potential use of a new technology of laser surface texturing (LST) in parallel thrust bearings is theoretically investigated, where the surface texture has the form of micro-dimples with pre-selected diameter, depth, and area density.
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