Computation model of composite cylindrical bearing working in steady-state regime for partial filling of gap with lubricant material

Akhverdiev, K. S.; Zadorozhnaya, N S; Mukutadze, A. M.; Flek, B. M.

doi:10.3103/s105261881603002x

Cited by 11 publications

(4 citation statements)

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“…However, lubrication on fused coatings is not a self-sustaining process. To ensure self-sustaining lubrication of sliding bearings, it is necessary that one of the contact surfaces had metal coating and there was always some lubricant present, which can be achieved by the continuous feeding of the lubricant or by using a porous coating on the other contact surface [13][14][15][16][17][18][19][20][21][22][23][24][25][26], or by using an unconventional support profile.…”

Section: Introductionmentioning

confidence: 99%

Calculation model for lubrication of bearings with unconventional support surface profile and fusible shaft surface coating

Badakhov

Zinoviev²,

Мукутадзе³

et al. 2023

E3S Web of Conf.

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This research work uses the true viscous fluid flow equation for the thin layer, the continuity equation, and the equation describing the radius of the fused shaft coated with a metal alloy taking into account the mechanical energy dissipation rate formula to find the asymptotic and the exact self-similar solution for the zero and first-order approximation for the radial sliding bearing with the support profile adapted to friction and lightalloy coating for incomplete filling of the working gap. We obtained the analytical dependencies for the fused surface radius of metal coating and the speed and pressure field. Besides, we determined the key operating parameters of the reviewed friction couple, the carrying capacity, and the friction force. The authors assess the impact of the parameters associated with the fusing of the coating of the friction-adapted support profile and the length of the loaded area on the carrying capacity and the friction force.

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Section: Introductionmentioning

confidence: 99%

Calculation model for lubrication of bearings with unconventional support surface profile and fusible shaft surface coating

Badakhov

Zinoviev²,

Мукутадзе³

et al. 2023

E3S Web of Conf.

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“…However, the process of lubrication on melts of coatings is not a self-sustaining process. To ensure a self-sustaining lubrication process for plain bearings, it becomes necessary not only to have a metal coating on one of the contact surfaces, but also a constant supply of lubricant, which can be provided with a constant supply of lubricant or a porous coating on the other contact surface [10][11][12][13][14][15][16][17][18][19], as well as nonstandard support profile.…”

Section: Introductionmentioning

confidence: 99%

Calculated model of a lubricant in a bearing with a non-standard support profile of a sleeve and a metal-coated shaft

et al. 2023

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In this work, on the basis of the flow equation of a truly viscous liquid, the continuity equation, and the equation describing the radius of the molten contour of the shaft coating, taking into account the dissipation rate of mechanical energy, an asymptotic and exact self-similar solution was found for the zero (without taking into account the melt) and the first (taking into account the melt) approximation of a radial bearing with a non-standard support profile adapted to friction conditions in hydrodynamic mode when the metal coating lubricates the shaft surface, taking into account the dependence of viscosity on pressure. An analytical dependence is obtained for the radius of the molten surface of the metal coating, as well as for the field of velocities and pressures at zero and first approximations. In addition, the main operating characteristics of the friction pair under consideration, the load capacity and the friction force are determined. The influence of the parameters characterizing the melt of the coating, the support profile adapted to the friction conditions, the dependence of the viscosity on the pressure on the load capacity and the friction force is estimated.

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“…Для подшипников скольжения, смазываемых антифрикционными полимерными покрытиями в гидродинамическом режиме смазывания, имеется значительное число работ [2][3][4][5][6][7][8][9], однако для расширения и конкретизации исследований применительно к трибосопряжениям технологических машин, работающих в условиях действия ударных и вибрационных нагрузок, повышенных эксплуатационных и низких климатических температур, абразивного и коррозионно-механического воздействия, наличия химически агрессивных сред, возникает необходимость учета целого ряда особенностей подобных трибосистем [10][11][12][13][14][15][16][17].…”

Section: Introductionunclassified

Increasing the Wear Resistance of a Polymer-Coated Radial Bearing Running on a Micropolar Lubricant

Andreeva,

Kirishcheva,

Mukutadze

2022

Vestnik IzhGTU imeni M.T. Kalashnikova

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The article is devoted to the analysis of a mathematical model of a lubricant mootion in the working gap of a radial sliding bearing with a support profile having a fluoroplast-containing composite polymer coating with a groove on the support surface, which has micro-polar properties. New mathematical models describing the motion of the bearing material in the working gap of a radial bearing with a support profile having a polymer coating with a groove, which has micropolar rheological properties in the laminar mode of motion, in the approximation for a “thin layer”, are proposed. A comparative analysis of the obtained results of a theoretical experimental study of a radial sliding bearing with a support profile having a polymer coating with a groove, without a groove, and the existing ones, confirming the approximation of the obtained model to real practice, is performed. The novelty of the work lies in the development of a methodology for engineering calculations of the design of a radial sliding bearing with a polymer coating in the presence of a groove that allows determining the value of the main tribotechnical parameters: hydrodynamic pressure, load capacity, friction force, friction coefficient. As a result of the study, a significant expansion of the possibilities of applying in practice the obtained mathematical models of a sliding bearing with a support profile having a polymer coating with a groove, operating in the mode of hydrodynamic lubrication with a material having non-Newtonian rheological properties in the laminar flow mode, allowing assessment of the operational characteristics of the bearing - the amount of hydrodynamic pressure, load capacity and coefficient of friction was achieved. The design of a radial bearing with a fluoroplastic-containing anti-friction composite polymer coating and a groove with a width of 2 mm ensured stable ascent of the shaft on a hydrodynamic wedge, which experimentally confirmed the correctness of the results of theoretical studies of sliding bearings with a diameter of 40 mm with a support profile having a polymer coating with a groove 1…8 mm wide, at a speed of sliding 1…3 m/s, load 4.2…45.5 MPa.

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Computation model of composite cylindrical bearing working in steady-state regime for partial filling of gap with lubricant material

Cited by 11 publications

References 0 publications

Calculation model for lubrication of bearings with unconventional support surface profile and fusible shaft surface coating

Calculation model for lubrication of bearings with unconventional support surface profile and fusible shaft surface coating

Calculated model of a lubricant in a bearing with a non-standard support profile of a sleeve and a metal-coated shaft

Increasing the Wear Resistance of a Polymer-Coated Radial Bearing Running on a Micropolar Lubricant

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