Modeling and Analysis of High-Speed Journal Bearing Based on Thermal Hydrodynamic Lubrication Theory

Song Sheng Li; Yu Xin Lu; Ma Li Dong; Juan Shao; Feng Yu

doi:10.4028/www.scientific.net/AMM.380-384.82

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 380-384Modeling and Analysis of High-Speed Journal...

Modeling and Analysis of High-Speed Journal Bearing Based on Thermal Hydrodynamic Lubrication Theory

Abstract:

Journal bearing in high-speed working conditions will generate a lot of heat, which affects its working performance. Based on hydrodynamic lubrication theory, a model of the thermal hydrodynamic lubrication was built, and the distributions of temperatures and pressures of the oil film were obtained from the simultaneous solution of generalized Reynolds, energy and viscosity-temperature equations. The results show that the temperature will increase and the pressure decrease of the lubrication oil film with the rising of the rotating speed, which will make the the bearing capacity decrease. Compared with the traditional isothermal model, the thermal hydrodynamic lubrication model is more consistent with the engineering practice.

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Periodical:

Applied Mechanics and Materials (Volumes 380-384)

Pages:

82-86

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.380-384.82

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Online since:

August 2013

Authors:

Song Sheng Li, Yu Xin Lu, Ma Li Dong, Juan Shao, Feng Yu

Keywords:

Dynamic Characteristic, Journal Bearing, Reynolds Equation, Thermal Hydrodynamic Lubrication, Viscosity-Temperature Effect

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