Performance analysis of thrust pad bearing using micro-rectangular pocket and bionic texture

Atwal, J. C.; Pandey, R.K.

doi:10.1177/1350650120940076

Cited by 42 publications

(33 citation statements)

References 43 publications

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“…Inspired by snake, cytister bengalensis aube and golf ball, Wang et al designed three texture patterns and studied their friction and wear properties under seawater lubrication 14 . Atwal et al investigated the tribological behaviors of a hydrodynamic thrust bearing with microrectangular pocket and Labeo rohita fish scale texture 21 . Lu et al designed the irregular gourd-shaped surface texture and researched the tribological performance of gourd-shaped textured stainless steel using an UMT2 tester 22 .…”

Section: Introductionmentioning

confidence: 99%

Effect of vein-bionic surface textures on the tribological behavior of cylindrical roller thrust bearing under starved lubrication

Long

Zhao

Zhang

et al. 2021

Sci Rep

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To reveal the effect of vein-bionic surface textures on the tribological behavior of cylindrical roller thrust bearings (CRTBs) under starved lubrication, six kinds of leaves (Forsythia, Clausena lansiu, Ash, Purple leaf plum, Pipal and Apricot) were chose and their simplified patterns were fabricated on the shaft washers of CRTBs using laser surface texturing. The coefficients of friction (COFs) of vein-bionic textured bearings were measured using a vertical universal wear test rig. Their mass losses and worn surfaces were also characterized. The results show that: There is important influence of the symmetry of vein-bionic textures and the number of secondary veins on the friction and wear properties of vein-bionic textured CRTBs under starved lubrication. Compared to the smooth group, the COFs and mass losses of vein-bionic textured bearings are all reduced. Among all groups, the tribological performance of bearings with a pattern inspired from Ash is the best. Its wear loss is reduced by 16.23% and its COF is reduced by 15.79%. This work would provide a valuable reference for the raceway design and optimization of roller rolling element bearings.

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Section: Introductionmentioning

confidence: 99%

Effect of vein-bionic surface textures on the tribological behavior of cylindrical roller thrust bearing under starved lubrication

Long

Zhao

Zhang

et al. 2021

Sci Rep

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“…Tribo-performance explorations in the existence of surface textures have attracted the wide attention of researchers in recent years. It has been widely understood that when textured bearing surface forms contact with moving counter surface in the presence of lubricant, innumerable microhydrodynamic bearings get formed 50,53,54,61,62 which support the externally applied load over-pressurized oil film without (in case of the hydrodynamic regime) having any physical contacts between the surfaces. Dimples or micro geometries of textured surfaces act as tiny lubricant reservoirs, contaminants, and debris trappers.…”

Section: Introductionmentioning

confidence: 99%

“…53,54 The researchers have tried to improve bearing performance by optimizing the size and shape of different micro geometries adopted in the textures. 13,18,21,22,25,31,34,50,52,53 Moreover, the effects of number of dimples, 11,35,43,50 area density of dimples, 17,19,24,26,45 shape of dimples 15,21,25,31,34,42,49 and dimple sizes 49,50,52,53,61,62 etc.…”

Section: Introductionmentioning

confidence: 99%

Influence of new surface micro-structures on the performance behaviours of fluid film tilting pad thrust bearings

Atwal

Pandey

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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Performance parameters such as power loss, minimum film thickness, and maximum oil temperature of the sector-shaped tilting pad thrust bearings employing the new micro-structural geometries on pad surfaces have been investigated. The lubrication equation incorporating the mass-conservation issue is discretized using the finite element method and the solution of resulting algebraic equations is obtained employing a Newton-Schur method. The pad equilibrium in the analysis is established using the Newton-Raphson and Braydon methods. The influence of attributes of micro-structures such as depth, circumferential and radial positioning extents have been explored on the performance behaviours. It is found that with the new micro-structured pad surfaces, the performance parameters significantly improved in comparison to conventional plain and conventional rectangular pocketed pads.

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“…The obtained results revealed that the application of a spherical micro-dimple on the bearing surface provides an enhanced value of the stability parameter, whereas frictional loss decreased correspondingly to a non-textured hybrid spherical journal bearing. Atwal and Pandey 17 presented the performance behaviors of a hydrodynamic thrust bearing incorporating new pad surface designs involving a micro-rectangular pocket and a Labeo rohitafish scale texture. It has been found that the pad surface having a micro-rectangular pocket and a fish scale texture together yields a substantial increase in minimum film thickness and reduction in friction coefficient as compared to the other pad designs.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of different types of micro-textured hydrostatic spindles under the main influencing factors

Chen

Zhao

Zha

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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To improve the performance of a hydrostatic bearing, a method of constructing micro-textures on the inner surface of a bearing is proposed to increase the bearing capacity and reduce the friction coefficient. In this paper, the composite texture is innovatively proposed, and the theoretical models of hydrostatic radial bearings under four situations including non-texture, square, spherical, and composite textures are established. The effect of texture shapes and texture parameters on bearing performance is numerically studied and the influence level of various factors on bearing performance is evaluated innovatively using the cross-correlation analysis. The results show that the presence of a micro-texture can improve the bearing capacity and reduce the friction coefficient of the bearing compared with smooth surface bearings; the composite micro-texture increases the bearing capacity by about 9.5%, the stiffness increases by about 8.2%, and the friction coefficient is reduced by about 10.5%; there is an optimal micro-texture unit area ratio (between 30% and 40%) making the bearing capacity largest and the friction coefficient smallest; finally, the influence level of various factors on the bearing performance is evaluated. The relative depth of the texture has the greatest influence on it, followed by the number of textures, and finally the unit area ratio. The above results will provide a theoretical basis for the design of hydrostatic bearings with micro-textures.

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Performance analysis of thrust pad bearing using micro-rectangular pocket and bionic texture

Cited by 42 publications

References 43 publications

Effect of vein-bionic surface textures on the tribological behavior of cylindrical roller thrust bearing under starved lubrication

Effect of vein-bionic surface textures on the tribological behavior of cylindrical roller thrust bearing under starved lubrication

Influence of new surface micro-structures on the performance behaviours of fluid film tilting pad thrust bearings

Performance evaluation of different types of micro-textured hydrostatic spindles under the main influencing factors

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