The effects of bearing distortion on the performance of hydrodynamic thrust bearings

Güllü, Emin

doi:10.1108/00368790510595093

Cited by 3 publications

(6 citation statements)

References 16 publications

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“…Consequently, it is easily observed that the maximum decrease in the load capacity for the pair of steel‐bronze is more than 50 per cent of that occurring in the pair of steel‐steel. The results of the present paper are consistent with those obtained in previous works (Rothbart, 1964; Toklar, 2003; Güllü, 2005; Wang et al , 2006), regarding the decrease in load capacity, the order of this decrease, and bearing size ratios for which the maximum decrease occurs.…”

Section: Resultssupporting

confidence: 93%

“…Non‐dimensional loads and decrease percentages in the load capacity are given in Tables I and II, for the pairs of steel runner‐steel pad and steel runner‐bronze pad, respectively. In these tables, the results obtained in the present paper are given, for comparison purposes, along with the results presented in two previous works which consider the case of both pad and runner being rigid, and the case of deformable pad but rigid runner (Toklar, 2003; Güllü, 2005).…”

Section: Resultsmentioning

confidence: 92%

“…The boundary conditions are given here only for runner as the boundary conditions are given for pad in Güllü (2005).…”

Section: Theoretical Model and Solution Methodsmentioning

confidence: 99%

“…The performance characteristics of thrust bearings are studied by Toklar (2003) and Güllü (2005) by taking into account pad distortions. The pressure distribution in the bearing is found using Reynolds equation.…”

Section: Introductionmentioning

confidence: 99%

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The effects of the total bearing deformation on the performance of hydrodynamic thrust bearings

Karadere

2010

Ind Lubrication and Tribology

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PurposeThe purpose of this paper is to study the effects of the total bearing deformation on the performance of hydrodynamic thrust bearings.Design/methodology/approachPressure distribution in the thrust bearing has been obtained using the Reynolds equation for the case of stable lubricant viscosity and isothermal conditions. Then, the deformation is found out by applying the constitutive equations for the linear elastic materials to both pad and runner. For the purpose of the generalization of the results, it is preferred to examine the case using non‐dimensional equations. The lubricant film thickness and pressure distribution before and after the deformation, the bearing deformation and the thrust load‐carrying capacity have been computed and compared for the steel runner‐steel pad and the steel runner‐bronze pad material pairs.FindingsIt is found that maximum load capacity loss occurs in the steel runner‐bronze pad pair as 3.03 per cent. Also, for a fixed load, when bearing dimensions are small, but deformations are large, the capacity loss due to runner deformations is nearly of the same order as those caused by pad deformations.Practical implicationsFor small bearings heavily loaded, both pad and runner deformations should be taken into account.Originality/valueIn the relevant literature, there exist some papers, which consider the deformability of only one part of a thrust bearing. This paper differs from the previous ones in that the effects of the deformations of both pad and runner are taken into account in evaluating the performance of a thrust bearing.

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 92%

“…The boundary conditions are given here only for runner as the boundary conditions are given for pad in Güllü (2005).…”

Section: Theoretical Model and Solution Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effects of the total bearing deformation on the performance of hydrodynamic thrust bearings

Karadere

2010

Ind Lubrication and Tribology

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“…Hydrodynamic thrust slider bearings have been theoretically studied plentifully by considering non-Newtonian fluids, surface roughness, fluid film viscous heating and surface elastic deformation [1][2][3][4][5][6][7][8]. Those studies addressed the bearing clearances over 0.1 μm, which is normally far larger than the thickness of the physically adsorbed layer on the bearing surface.…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Elastic Deformation in Hydrodynamic Inclined Fixed Pad Thrust Bearing with Low Clearance

ZHU,

ZHANG

2023

mech

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The paper analytically studies the effect of surface elastic deformation in hydrodynamic inclined fixed pad thrust slider bearing with low clearances by the multiscale approach considering the physically adsorbed layer on the bearing surface. The numerical calculation results show that the bearing surface elastic deformation has significant influences on both the hydrodynamic pressure and the surface clearance in the bearing especially for a strong fluid-bearing surface interaction. For given load, sliding speed and bearing geometrical sizes, the surface elastic deformation considerably reduces the minimum bearing clearance, which exists on the exit of the bearing. It also significantly reduces the hydrodynamic film stiffness and the load-carrying capacity of the bearing especially for a strong fluid-bearing surface interaction and low bearing clearances. The increasing proportionality of the carried load of the bearing with the sliding speed is also significantly reduced by the surface elastic deformation particularly for a strong fluid-bearing surface interaction.

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Ferrofluid Lubrication of Rotating Curved Rough Porous Circular Plates and Effect of Bearing’s Deformation

Shimpi¹,

Deheri

2012

Arab J Sci Eng

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The effects of bearing distortion on the performance of hydrodynamic thrust bearings

Cited by 3 publications

References 16 publications

The effects of the total bearing deformation on the performance of hydrodynamic thrust bearings

The effects of the total bearing deformation on the performance of hydrodynamic thrust bearings

Effect of Surface Elastic Deformation in Hydrodynamic Inclined Fixed Pad Thrust Bearing with Low Clearance

Ferrofluid Lubrication of Rotating Curved Rough Porous Circular Plates and Effect of Bearing’s Deformation

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