Analysis of Misaligned Grooved Journal Bearings

Pinkus, O.; Bupara, Sargit S.

doi:10.1115/1.3453402

Cited by 54 publications

(15 citation statements)

References 3 publications

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“…33 The approach is used to represent film thickness (h¯) in equation (6), is mentioned in literature. 11,12 Here, h¯ varies in both the circumferential and axial directions of the misaligned journal. The non-dimensional form of film thickness is given by where ɛ' is the magnitude of the projection of the complete journal axis onto the mid-plane of the bearing.…”

Section: Theoretical Analysismentioning

confidence: 99%

Steady-state performance analysis of misaligned double-layered porous journal bearings under coupled-stress lubrication with slip flow and additives percolation effect

Some

Guha

2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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The aim of this paper is to address the effect of misalignment of the double-layered porous journal bearing on the steady-state performance analysis under coupled-stress lubrication with velocity phenomenon at the fine porous interface. Here, the misalignment caused by shaft displacement, e.g. axial (vertical displacement) and twisting (horizontal displacement) is considered. This analysis includes velocity slip phenomenon on the basis of Beavers-Joseph criteria. Moreover, the present analysis also focuses on the percolation effect of the additives into the pores of the porous layers. Steady-state film pressures are obtained by solving the modified Reynolds equation based on the coupled-stress lubrication theory. Under various parametric conditions, pressure profiles in the film region are discussed and demonstrated in the graphical form. Using these film pressure values, steady-state characteristics in terms of bearing load carrying capacity, attitude angle, frictional parameter, side leakage and misalignment moment are evaluated at various parametric conditions and represented in the graphical form.

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Section: Theoretical Analysismentioning

confidence: 99%

Steady-state performance analysis of misaligned double-layered porous journal bearings under coupled-stress lubrication with slip flow and additives percolation effect

Some

Guha

2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Pinkus and Bupara [44] in 1979 presented a comprehensive isothermal solution for a two-groove finite bearing in the form of charts and tables. The equations are valid for finite bearings with grooves at any angular position where the misalignment can vary in both magnitude and direction with respect to the bearing boundaries.…”

Section: Application To Different Types Of Bearingsmentioning

confidence: 99%

On the Characteristics of Misaligned Journal Bearings

Jang

Khonsari

2015

Lubricants

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Journal bearing misalignment arise generally from the shaft deformation under load, deflection of the shaft, manufacturing and assembly errors, improper installation, and asymmetric loading. During operations, misalignment has a considerable effect on the static and dynamic performances. It could cause wear, vibration and even system failure. In this article, a literature review of misalignment of the journal bearings is presented. The basic theory for the misalignment and some results for the circular journal bearing are also presented to show the general trends of the misalignment.

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“…For an adjustable fluid film bearing, the load capacity was hardly affected due to misalignment apart from a rise in load capacity immediately prior to shaft contact as found by Shenoy et al 10 in their investigation. Pinkus et al 11 in their theoretical study of misaligned grooved journal bearing recommend that long L/D ratios are undesirable for misaligned journal bearings. Mallya et al 12 have theoretically studied the effect of twisting and vertical plane misalignment on the steady-state characteristics of axial groove bearing lubricated with water.…”

Section: Introductionmentioning

confidence: 99%

Static characteristics of misaligned multiple axial groove water-lubricated bearing in the turbulent regime

Mallya

Shenoy

Pai

2016

Proceedings of the Institution of Mechanical Engineers, Part J:

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The static characteristics of misaligned three-axial water-lubricated journal bearing in the turbulent regime are analyzed for groove angles 36° and 18°. Ng and Pan’s turbulence model is applied to study the turbulence effects in the journal bearing. The static parameters such as load-carrying capacity, friction coefficient, and side leakage are found for different degree of misalignment (DM). The change in flow regime of the lubricant from laminar to turbulent and the increase in misalignment, improved the load capacity of the bearing. For lightly loaded bearings, the friction coefficient of the bearing increased with the increase in Reynolds number.

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Analysis of Misaligned Grooved Journal Bearings

Cited by 54 publications

References 3 publications

Steady-state performance analysis of misaligned double-layered porous journal bearings under coupled-stress lubrication with slip flow and additives percolation effect

Steady-state performance analysis of misaligned double-layered porous journal bearings under coupled-stress lubrication with slip flow and additives percolation effect

On the Characteristics of Misaligned Journal Bearings

Static characteristics of misaligned multiple axial groove water-lubricated bearing in the turbulent regime

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