Implication of Surface Texture and Slip on Hydrodynamic Fluid Film Bearings: A Comprehensive Survey

Arif, Mohammad; Shukla, Dinesh Kumar; Kango, Saurabh; Sharma, Nitin

doi:10.2474/trol.15.265

Cited by 22 publications

(10 citation statements)

References 138 publications

(178 reference statements)

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“…[38][39][40][41] Researchers have been incorporating micro-textures and SBC on many surfaces ever since the evidence of their benefits in tribological improvements. [54][55][56][57][58][59][60][61][62][63][64] Salant and Fortier 54 numerically investigated the effect of slip-no slip surfaces on the tribological performance of slider bearings. The slip pattern was provided on 0.725 of the total length and 0.75 of the total width of the slider.…”

Section: Introductionmentioning

confidence: 99%

Effect of sliding speed on the thermohydrodynamic performance of partially slip‐textured slider bearings

Singh

Kango

2023

Lubrication Science

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The present study evaluates the combined use of micro‐textures and ‘wettability gradient’ on the thermohydrodynamic performance of inclined slider bearings. Mass conserving Elrod cavitation model with slip boundary condition has been used to investigate the dimensionless static performance parameters at different convergence ratios and sliding speeds. The most effective location of the wettability gradient and textures has been considered in the present work. It has been observed that with the increase in sliding speed, the load carrying capacity, friction force and volumetric inflow rate of the slip‐textured bearings were improved. The improvements were more pronounced at smaller convergence ratios. Moreover, the slip‐textured bearings exhibited significant improvement in the average pressure and temperature of the lubricant. However, at higher sliding speeds, a substantial increase in friction force and average lubricant temperature was noticed. The square textured slip bearing exhibited maximum improvements towards various performance parameters of the three considered texture shapes.

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Section: Introductionmentioning

confidence: 99%

Effect of sliding speed on the thermohydrodynamic performance of partially slip‐textured slider bearings

Singh

Kango

2023

Lubrication Science

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“…Slider bearings have been used to reduce friction between two surfaces sliding against each other. They have wide applications in automobile, marine, aerospace, machine tools and other fields [1]. However, existing designs experience several failures like wear, cavitation, high friction and less lubricant supply [2], which decreases the load bearing capacity (LBC) of the slider bearings.…”

Section: Introductionmentioning

confidence: 99%

Thermohydrodynamic performance of convergent slider bearings using different placement of square micro-textures and slip boundary

Singh,

Kango

2024

Phys. Scr.

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The present numerical study investigates the thermohydrodynamic performance of inclined/convergent slider bearings using different placing of textures and slip region. Mass-conserving Elrod cavitation model with slip boundary is used to analyze the static performance variables. Due to better fluid retain-ability, Square-shaped micro-textures have been used. The slip coefficient for the slip boundary on the bearing surface is taken as 9 μm. As reported previously for convergent bearings, the optimal convergence ratio (K) value for maximum bearing performance lies between 1 and 1.4. Therefore, in the present paper, the value of K is taken as 1.2. It was observed that the location of micro-textures and slip boundary greatly influence the bearing performance. When textures and slip regions are placed near the inlet region of the bearing, with a reduction in shear stress and the availability of the lubricant near the inlet, the resistance to the lubricant flow reduces, increasing lubricant intake. Further, for partial slip bearing, an abrupt obstruction to the lubricant flow occurs at the location of the slip/no-slip interface, which increases the hydrodynamic pressure and improves the load bearing capacity of the bearing. Moreover, due to less friction observed, various slip-textured bearings showed a reduction in the average lubricant temperature compared to conventional bearing. In the end, an updated combined slip-textured bearing surface is presented for maximum bearing performance in terms of different performance variables. The findings of the current work would be helpful for researchers in selecting the optimum slip-textured surface for inclined slider bearings under the current operating conditions.

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“…Many researchers have emphasized on adoption of partial surface textures instead of full textures by optimally utilizing other crucial parameters such as location, size, geometry etc. of the textures [1][2][3][4][5][6][7][8][9][10]. Researchers have also carried out experimental studies on the hydrodynamic bearings to understand the bearing performance parameters under the real operating conditions.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations on Temperature and Frictional Behaviors of Textured Journal Bearings

Kango¹,

Sharma²,

Sharma³

et al. 2022

Tribol. Ind.

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Experimental work provides a greater insight into the performances of journal bearings under actual operating conditions. Moreover, experimental findings also provide a platform for validation of numerical model based results and helps to point out suggestions needed to pursue further research. This article has been written in the direction of providing few factual experimental observations using the fabricated bush bearings having conventional, full textured (0⁰ to 360⁰) and half textured (0⁰ to 180⁰ and 180⁰ to 360⁰) bores. The textured bores involving cylindrical dimples were fabricated using electric discharge machining (EDM). Experiments were conducted at two loads (load per unit projected area = 0.3 and 1.5 MPa) and two journal speeds (2 and 5 m/s) employing SAE-30 lubricating oil. The experimental results revealed that the bearing with textures lying in the converging zone (0⁰ to 180⁰) yielded maximum reduction in coefficient of friction as compared to conventional (smooth) and other textured cases considered herein. Temperature rise with this textured bearing (0⁰ to 180⁰) also found less among all the textured bore cases.

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Implication of Surface Texture and Slip on Hydrodynamic Fluid Film Bearings: A Comprehensive Survey

Cited by 22 publications

References 138 publications

Effect of sliding speed on the thermohydrodynamic performance of partially slip‐textured slider bearings

Effect of sliding speed on the thermohydrodynamic performance of partially slip‐textured slider bearings

Thermohydrodynamic performance of convergent slider bearings using different placement of square micro-textures and slip boundary

Experimental Investigations on Temperature and Frictional Behaviors of Textured Journal Bearings

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