2019
DOI: 10.1115/1.4043641
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Elastohydrodynamic Lubrication Modeling by a Cosserat Continuum Theory for Small Polymer Journal Bearings

Abstract: Recent experiments have shown that the elastic deformation behaviors of a polymeric material are consistent with the Cosserat elasticity under nonuniform deformation at a millimeter scale. Thus, an elastohydrodynamic lubrication model in the framework of the Cosserat continuum theory is proposed to explore the lubrication performance that deviates from the classical elastohydrodynamic lubrication theory for the small polymer journal bearings with millimeter size. The elastic deformation of the bearing sleeve m… Show more

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Cited by 5 publications
(2 citation statements)
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“…The focus of this paper is on the churning losses. Thus the EHL film was neglected, as it is standard practice [27][28][29][30][31] to adopt different numerical methods for it. Therefore, also the modeled gap between rollers and races is not fully representative of the real one and each bearing element is in its nominal position.…”
Section: Bearing Lossesmentioning
confidence: 99%
“…The focus of this paper is on the churning losses. Thus the EHL film was neglected, as it is standard practice [27][28][29][30][31] to adopt different numerical methods for it. Therefore, also the modeled gap between rollers and races is not fully representative of the real one and each bearing element is in its nominal position.…”
Section: Bearing Lossesmentioning
confidence: 99%
“…Based on the elastohydrodynamic lubrication theory, the oil film thickness, pressure, and load-carrying capacity of journal and rolling bearings are obtained, and the effects of different factors on the EHL film are analyzed. [26][27][28][29][30] In addition, the energy equation and the viscosity-temperature equation are calculated at the same time to study the effect of elastic deformation on the thermal hydrodynamic performance of the bearing. 31,32 The investigation of bearing internal flow behavior is of particular importance for the precise design and optimization of the lubrication structure.…”
Section: Introductionmentioning
confidence: 99%