Analysis of multirecess conical hydrostatic thrust bearings under rotation

Prabhu, T.Jayachandra; Ganesan, N.

doi:10.1016/0043-1648(83)90212-0

Cited by 30 publications

(8 citation statements)

References 9 publications

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“…Sharama et al (2002) recently studied lubrication performance of hole-entry hybrid journal bearing system, and the influence of thermal deformation and elastic deformation on lubrication performance was obtained. Jayachandra Prabhu and Ganesan (1983a, 1983b, 1984, 1983c used the finite element method to compute the characteristics of a multi-pad hydrostatic thrust bearing, and the influence of tilt and rotation on lubrication characteristics was obtained. Osman et al (1991) designed a dynamically loaded thrust bearing with annular recess, and they solved load-carrying capacity, bearing stiffness, damping coefficient and lubricant flow rate, and found that the bearing performance characteristics were dependent on the bearing radii ratios, the sequence number, the bearing number and the tilt parameter.…”

Section: Introductionmentioning

confidence: 99%

Influence of recess shape on comprehensive lubrication performance of high speed and heavy load hydrostatic thrust bearing

Zheng

et al. 2019

ILT

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Purpose This paper aims to describe a theoretical and experimental research concerning influence of recess shape on comprehensive lubrication performance of high speed and heavy load hydrostatic thrust bearing with a constant flow. Design/methodology/approach The lubrication performance of a hydrostatic thrust bearing with different recess shape under the working conditions of high speed and heavy load has been simulated by using computational fluid dynamics and finite volume method. Findings It is found that the comprehensive lubrication performance of a hydrostatic thrust bearing with circular recess is optimal. The results demonstrate that recess shape has a great influence on the lubrication performance of the hydrostatic thrust bearing. Originality/value The simulation results indicate that to get an improved performance from a hydrostatic thrust bearing with constant flow, a proper selection of the recess shape is essential.

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Section: Introductionmentioning

confidence: 99%

Influence of recess shape on comprehensive lubrication performance of high speed and heavy load hydrostatic thrust bearing

Zheng

et al. 2019

ILT

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“…The orifice and capillary fitted annular conical recess thrust bearings, with the influence of rotational lubricant inertia for semi-cone angles (45 4 g 4 90 ) under static and dynamic conditions, has been studied by Prabhu et al 16 in 198116 in . Further, in 1983, the influence of rotational lubricant inertia of multi-recess hydrostatic conical thrust bearing for semi-cone angle ¼ 90 has been studied by Prabhu et al 17 Further, using the capillary and orifice compensations, they computed stiffness, damping characteristics, flow and load capacity for the practically useful aspect and resistance ratios. Non-Newtonian lubrication problem for the conical journal bearing of finite width is analytically solved by Nowak and Wierzcholske.…”

Section: Introductionmentioning

confidence: 99%

Orifice compensated performance characteristics of hybrid hole-entry conical journal bearing

Khakse¹,

Phalle²,

Mantha³

2016

Proceedings of the Institution of Mechanical Engineers, Part J:

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Influence of semi-cone angles on the performance of the non-recessed hybrid/hydrostatic hole-entry conical journal bearing compensated with orifice restrictor has been carried out analytically. The analysis comprises two rows of symmetric hole-entry contour in the circumferential direction of hybrid/hydrostatic conical journal bearing. An orifice restrictor is used in the hole-entry contour to allow the restricted flow in the clearance space of a journal and bearing. Well-known finite element method and Newton-Raphson method for restrictor have been used to solve the Reynolds equation, governing the fluid flow in the clearance space of a hybrid/hydrostatic conical journal and bearing. Further, the spherical coordinate system has been employed to solve Reynolds equation instead of cylindrical coordinate system. Performance characteristics in terms of stiffness coefficient, damping coefficient, bearing pressure, bearing flow, and minimum fluid film thickness have been discussed for variable external radial load ( " W r ) ¼ 0.25-1.5. The performance characteristics in terms of " h min , " Q, and " S 22 is found to be quite significant for hybrid hole-entry conical journal bearing when compared with hydrostatic hole-entry conical journal bearing, which allows the designer to choose appropriate non-recessed hybrid hole-entry conical journal bearing.

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“…The main features of hydrostatic are small friction coefficient, high capacity, having nothing to do with speed, small start-up torque on the wheel and long service life, and because the liquid oil film has very good damping characteristics, so it makes the cutting vibration Smaller and the precision of the rotating spindle higher [3] . Because of a series with the abovementioned advantages, Static thrust bearings get people's attention and universal application [4] . The principle of quantitative oil hydrostatic bearing is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Simulation Research on Gap Flow of Circular Cavity Multi-pad Hydrostatic Thrust Bearing

Zhang

Shao

et al. 2009

2009 International Conference on Intelligent Human-Machine Systems and Cybernetics

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A simulation research concerning the gap flow performance of multi-pad hydrostatic thrust bearing having circular cavities in the large-scale vertical CNC lathe was described. The Finite Volume Method of Fluent has been used to compute fluid three-dimensional velocity field and pressure field of gap flow between the revolution working table and bearing pad. This study theoretically analyzes the influence of cavity area on the bearing performance according to computational fluid dynamics and lubricating theory. It has revealed its flow distribution law. The simulation results indicate that an improved characteristic can be gotten from a circular cavity multi-pad hydrostatic thrust bearing, oil cavity pressure increases by gradually with cavity area enhancing, pressure reaches extremely large value in some location, decreases gradually by degrees, the effect of cavity area on the velocity is very small . Through this method, the safety of a hydrostatic thrust bearing can be forecasted, and the optimal design of such products can be achieved.

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Analysis of multirecess conical hydrostatic thrust bearings under rotation

Cited by 30 publications

References 9 publications

Influence of recess shape on comprehensive lubrication performance of high speed and heavy load hydrostatic thrust bearing

Influence of recess shape on comprehensive lubrication performance of high speed and heavy load hydrostatic thrust bearing

Orifice compensated performance characteristics of hybrid hole-entry conical journal bearing

Simulation Research on Gap Flow of Circular Cavity Multi-pad Hydrostatic Thrust Bearing

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