Piezo-viscous-polar lubrication of hybrid journal bearing under misaligned operation

Rajput, Arvind K.; Singh, Vishal

doi:10.1007/s00707-023-03816-8

Acta Mech

2024

DOI: 10.1007/s00707-023-03816-8

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Piezo-viscous-polar lubrication of hybrid journal bearing under misaligned operation

Arvind K. Rajput,

Vishal Singh

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2024

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Impact of velocity slippage on the behaviour of PVP lubricated multirecessed hybrid journal bearing

Singh,

Rajput

2024

Proceedings of the Institution of Mechanical Engineers, Part J:

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In oil film journal bearings, the solid-liquid interfaces are susceptible to velocity slippage due to several factors such as low oil viscosity near solid surface, molecular slippage or wettability of coating material. Moreover, presence of long chain polymer additives in the base oil induces polarity effect in presence of couple-stresses and at high pressure conditions, these additized lubricants exhibit piezo-viscosity. This article presents a novel investigation to evaluate the impact of velocity slippage on the behaviour of multirecessed hybrid journal bearing (MHJB) system functioning with PVP lubricant. To govern the flow behaviour of PVP lubricant in MHJB, the novel forms of Reynolds equations are obtained for various velocity slippage conditions. These governing equations are numerically solved using FEM to evaluate nodal values of oil film pressure and characteristic parameters of bearing system. The simulated results reveal that the velocity slippage causes a substantial degradation in the performance parameters, viz., [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text]. The application of PVP lubricant instead of Newtonian lubricant may partially recuperate this degradation in the bearing's characteristics.

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Impact of velocity slippage on the behaviour of PVP lubricated multirecessed hybrid journal bearing

Singh,

Rajput

2024

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

show abstract

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Piezo-viscous-polar lubrication of hybrid journal bearing under misaligned operation

Cited by 1 publication

References 64 publications

Impact of velocity slippage on the behaviour of PVP lubricated multirecessed hybrid journal bearing

Impact of velocity slippage on the behaviour of PVP lubricated multirecessed hybrid journal bearing

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