Numerical Solution of Elastohydrodynamic Lubrication for Sliding/Rolling Bearing for Non-newtonian Lubricant

Karimi, Samuel Macharia; Kimathi, Mark; Kinyanjui, Mathew

doi:10.11648/j.ajam.20200805.13

Cited by 1 publication

(1 citation statement)

References 12 publications

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“…Huo et al (2019) studied the influence of scale effect and thermal effect on the elastohydrodynamic lubrication (EHL) characteristics of axle box bearing. Karimi et al (2020) established the lubrication model of sliding/rolling bearing and used the Reynolds-Eyring equation to discuss the influence of various speeds and loads on oil film pressure and thickness. Zhou et al (2017) studied the influence of geometric parameters and working parameters on the non-Newtonian TEHL performance of herringbone gear drive.…”

Section: Introductionmentioning

confidence: 99%

Thermal elastohydrodynamic lubrication characteristics and optimisation of the ball-type tripod universal joint

Yang

Han

2021

ILT

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Purpose This paper aims to study the influence of three-column groove shell radius, ball radius, lubricating oil viscosity and elastic modulus on the thermal elastohydrodynamic lubrication (TEHL) characteristics and optimisation of the ball-type tripod universal joint. Design/methodology/approach The point contact TEHL model of the joint was developed, and the multi-grid method was used to solve it. The influence of three-column groove shell radius, ball radius, lubricating oil viscosity and elastic modulus on the lubrication characteristics was analysed. Further, the optimisation of the joint TEHL performance was carried out by the Kriging approximation model combined with the multi-objective particle swarm optimisation (MOPSO) algorithm. Findings The research results show that increasing groove shell radius and ball radius can effectively increase the oil film thickness, and decrease the oil film pressure, as well as the temperature rise. Decreasing elastic modulus can reduce the oil film temperature rise and pressure, and increasing viscosity can effectively increase the oil film thickness. The optimised minimum oil film thickness increases by 33.23% and the optimised maximum oil film pressure and maximum temperature rise decrease by 11.92% and 28.87%, respectively. Furthermore, the relative error of each response output is less than 10%. Originality/value This study applies TEHL theory to the tribological research of the ball-type tripod universal joint, and the joint’s lubrication performance is improved greatly by the Kriging model and MOPSO algorithm, which provides an effective measure to raise the joint’s working efficiency.

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Section: Introductionmentioning

confidence: 99%