Load Capacity of Partially Textured Journal Bearing with Trapezoidal Recess

Rao, T. V. V. L. N.; Abdul-Rani, Ahmad Majdi; Thirumalaiswamy, Nagarajan; Hashim, Fakhruldin Mohd

doi:10.4028/www.scientific.net/amm.315.830

Cited by 7 publications

(6 citation statements)

References 7 publications

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“…Researchers [12][13][14][15][16][17] experimentally and theoretically studied the influence of rectangular dimples on the bearing performance. Rao et al 18 concluded that partial texturing utilizing trapezoidal surface textures can improve the load-bearing ability of journal bearings. Meng et al 19 showed that compound dimples can enhance the load-bearing ability and reduce the friction vis-a-vis rectangular-shaped dimple on the bearing surface.…”

Section: Introductionmentioning

confidence: 99%

Influence of texture geometries on the performance parameters of hydrodynamic journal bearing

Singh

Awasthi

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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The operating and geometric parameters of textures affect the static, dynamic, and stability performance characteristics of a journal-bearing system. The present work investigates the influence of spherical-, cylindrical-, triangular-, and kite-shaped textures on the performance parameters of a journal-bearing system. The flow of a lubricant is assumed to be Newtonian and iso-viscous. Reynold's equation governing the flow of a lubricant between the space in the bearing and the journal is solved by a finite-element method. The computed results indicate that the spherically textured journal bearing provides better improvement in the performance parameters vis-a-vis other textured bearings. In general, the effect of texture shapes is more pronounced at the aspect ratio of surface textures is 1.0.

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Section: Introductionmentioning

confidence: 99%

Influence of texture geometries on the performance parameters of hydrodynamic journal bearing

Singh

Awasthi

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Various other surface texture geometries have been adopted by different researchers. Tala-Ighil et al 9 used elliptical surface geometry of dimple and Rao et al 10 used trapezoidal surface texturing geometry and showed that the load capacity of concentric journal bearing can be enhanced using partially textured bearing surface. Meng et al 11 made a comparative study on compound (rectangular-spherical dimples) and simple dimple (rectangular dimples), using fluid structure interaction, analyzing the performance of a journal bearing.…”

Section: Introductionmentioning

confidence: 99%

“…9 used elliptical surface geometry of dimple and Rao et al. 10 used trapezoidal surface texturing geometry and showed that the load capacity of concentric journal bearing can be enhanced using partially textured bearing surface. Meng et al.…”

Section: Introductionmentioning

confidence: 99%

Effect of surface texturing on the dynamic characteristics of hydrodynamic journal bearing comprising concepts of green tribology

Matele

Pandey

2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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Surface texturing has emerged as a viable option for enhancing the surface properties. The present study analyzes the effect of full and partial micro-textured surface, at different locations and different kinds of dimple geometries, on the dynamic characteristics of hydrodynamic journal bearings and made a comparative study with the non-textured bearings. Three different kinds of dimple geometries, namely, circular texture, square texture, and densely distributed square texture have been adopted for study. The important dynamic characteristics of bearings were evaluated and stability charts were plotted. Location of the texture was found as an important parameter for improved dynamic characteristics though the extent of improvement depends largely on the geometry of texture. The partial textured bearing with proper geometry and location was found to be more stable. Stability margin of such bearings was more in comparison to the plain journal bearings and the relative improvement was found to be the maximum for circular texture and minimum for square texture. The study also shows the potential of surface texturing to make contribution in the accomplishment of the objectives of green tribology.

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“…Rao et al. 31 utilized the trapezoidal shaped texture and concluded that partial texturing can enhance the load-carrying capacity of journal bearing system. Meng et al.…”

Section: Introductionmentioning

confidence: 99%

“…Their results indicated that the bearing temperature and dynamic bearing coefficients are affected by surface texturing. Rao et al 31 utilized the trapezoidal shaped texture and concluded that partial texturing can enhance the load-carrying capacity of journal bearing system. Meng et al 32 studied the effect of compound dimple/texture on the performance of journal bearing and concluded that compound dimple on the bearing surface provides better load-carrying capacity and reduction in friction than simple rectangular dimple.…”

Section: Introductionmentioning

confidence: 99%

Theoretical investigation of surface texture effects on the performance characteristics of hydrodynamic two-lobe journal bearing

Singh

Awasthi

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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In the present work, theoretical investigation has been performed to predict the influence of spherical textures on the performance characteristics of two-lobe journal bearing system. The flow of lubricant in the clearance space between the bearing and the journal is governed by the Reynolds equation assuming the flow is Newtonian and isoviscous. The Reynolds equation is solved using a finite element method and the static performance parameters of circular/two-lobe smooth/textured journal bearing system have been computed with variation in eccentricity ratio, dimple depth and its location. The numerically simulated results reveal that the partial surface texturing can provide better performance when the textures are created in the pressure build-up region of 126°–286° and the dimple aspect ratio is nearly 1.0.

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Load Capacity of Partially Textured Journal Bearing with Trapezoidal Recess

Cited by 7 publications

References 7 publications

Influence of texture geometries on the performance parameters of hydrodynamic journal bearing

Influence of texture geometries on the performance parameters of hydrodynamic journal bearing

Effect of surface texturing on the dynamic characteristics of hydrodynamic journal bearing comprising concepts of green tribology

Theoretical investigation of surface texture effects on the performance characteristics of hydrodynamic two-lobe journal bearing

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