Behaviour of conical porous hybrid journal bearing operated with MHD lubricant considering influence of surface irregularities

Singh, A. K.; Sharma, Satish C.

doi:10.1016/j.triboint.2022.107730

Cited by 12 publications

(3 citation statements)

References 49 publications

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“…Khatri and Sharma 27 investigated the impact of spherical-shaped texturing on the dynamic performance of a hole-entry hybrid bearing and reported the enhancement of threshold speed and dynamic coefficients for fully textured distribution. Furthermore, several studies [28][29][30][31][32][33][34][35][36][37] have shown that several geometrical flaws, non-circular bearings, different journal shapes, lobe bearings, curved bearings, surface texturing and so forth influence the bearing operation.…”

Section: Introductionmentioning

confidence: 99%

Effect of partial surface waviness on the dynamic and stability performance of journal bearing

Bangotra,

Sharma

2024

Lubrication Science

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This study presents the impact of full and partial surface waviness on the dynamic and stability performance of the journal bearing. The Reynolds equation is modified to account for the impact of surface waviness, and the lubricant domain is discretized using the Finite element method to obtain dynamic characteristics such as stiffness and damping coefficients and stability parameters, that is, threshold speed. Different wave numbers in the axial, circumferential and mixed directions are considered at variable wave amplitudes in different regions at an average eccentricity ratio of 0.6 to obtain the optimum values. The obtained results reveal that by application of waviness in the full region and partial waviness in the pressure‐reducing region on the bearing surface provides the enhanced value of stability parameter, fluid film stiffness and dynamic coefficients as compared to the simple journal bearing under the same working conditions.

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Section: Introductionmentioning

confidence: 99%

Effect of partial surface waviness on the dynamic and stability performance of journal bearing

Bangotra,

Sharma

2024

Lubrication Science

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“…The Reynolds equation simplified from N‐S equation is widely used to characterise the lubrication parameters, such as the thickness, pressure and velocity of the oil film in a confined space. It plays an important role in enriching the tribological design theory of the basic parts in transmission equipment 9–11 . To promote the development of the tribological design methods for porous surface containing liquid, applying the existing lubrication theory to the porous surface and studying the self‐lubrication mechanism become urgent problems to be clarified in the current research.…”

Section: Introductionmentioning

confidence: 99%

“…It plays an important role in enriching the tribological design theory of the basic parts in transmission equipment. [9][10][11] To promote the development of the tribological design methods for porous surface containing liquid, applying the existing lubrication theory to the porous surface and studying the self-lubrication mechanism become urgent problems to be clarified in the current research.…”

Section: Introductionmentioning

confidence: 99%

Transient squeezing flow of the lubricant impregnated in the porous material

Zhang

Jiang

et al. 2023

Lubrication Science

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Porous materials are widely used in friction pairs. The transient squeezing flow of the lubricant significantly affects the lubrication quality. The study found that the lubricant penetrates into the porous matrix in the contact area and exudes upward to the entrance of the contact area. The maximum stress occurs at the subsurface of the contact zone, and the maximum pressure occurs at the contact centre. In the early loading stage, the lubricant exudates, resulting in a higher liquid‐phase load. With the prolongation of the time, the average stress decreases and then increases gradually, whilst the average pressure has the opposite change. In the late loading stage, the load is completely borne by the solid phase. Increasing the load will increases the seepage velocity of the lubricant, which enhance the pumping effect of the friction interface. The findings can help for better understanding of the self‐lubrication mechanism of the porous materials.

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Problems of Development of Tribotronics: Control and Machine Learning Techniques

Савин

Shutin

Kazakov

et al. 2023

Lecture Notes in Mechanical Engineering

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Behaviour of conical porous hybrid journal bearing operated with MHD lubricant considering influence of surface irregularities

Cited by 12 publications

References 49 publications

Effect of partial surface waviness on the dynamic and stability performance of journal bearing

Effect of partial surface waviness on the dynamic and stability performance of journal bearing

Transient squeezing flow of the lubricant impregnated in the porous material

Problems of Development of Tribotronics: Control and Machine Learning Techniques

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