Finite element application to the study of hydrostatic thrust bearings
TL;DR: In this paper, a finite element method was developed using linear triangular elements to solve the two-dimensional Reynolds equation in the polar coordinate system including the rotational lubricant inertia term, and the validity of the method was verified by comparison with the finite difference solution for parallel and non-parallel operation of the hydrostatic thrust bearing.
About: This article is published in Wear.The article was published on 1984-08-22. It has received 12 citations till now. The article focuses on the topics: Extended finite element method & Thrust bearing.
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TL;DR: In this paper, a theoretical analysis of a 4 pocket capillary compensated conical hybrid journal bearing system operating with micropolar lubricant has been carried out for different values of micropolastic parameters, that is, characteristic length and coupling number.
Abstract: The present paper deals with a theoretical analysis of 4-pocket capillary compensated conical hybrid journal bearing system operating with micropolar lubricant. The modified Reynolds equation for a conical journal bearing system operating with micropolar lubricant has been derived. In the present study, Eringen's micropolar theory has been used to model micropolar lubrication in cylindrical coordinate system. The study has been carried out for the different values of micropolar parameters, that is, characteristic length () and coupling number (). The conical bearing configurations having semicone angle 10∘, 20∘, 30∘, and 40∘ have been studied. The study suggests that micropolar lubricant offers better performance vis- a-vis Newtonian lubricant for bearing configurations having values of semicone angle 10∘and 20∘.
20 citations
Cites background from "Finite element application to the s..."
...[7] T. J. Prabhu and N. Ganesan, “Finite element application to the study of hydrostatic thrust bearings,” Wear, vol. 97, no. 2, pp. 139–154, 1984....
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...Prabhu and Ganesan [4, 6, 7] analyzed the dynamic stiffness characteristics of capillary compensated annular recess conical hydrostatic thrust bearings....
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...[6] T. J. Prabhu and N. Ganesan, “Theoretical analysis of the dynamic stiffness of conical hydrostatic thrust bearings under tilt, eccentricity and rotation,” Wear, vol. 91, no. 2, pp. 149– 159, 1983....
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...[4] T. J. Prabhu and N. Ganesan, “Eccentric operation of conical hydrostatic thrust bearings,” Wear, vol. 87, no. 3, pp. 273–285, 1983....
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03 Jan 2013
TL;DR: In this article, the influence of micropolar lubricant on a four-pocket conical hybrid journal bearing system compensated with a membrane restrictor was analyzed using an analytical study.
Abstract: This article describes an analytical study to demonstrate the influence of micropolar lubricant on a four-pocket conical hybrid journal bearing system compensated with membrane restrictor. The modi...
18 citations
Cites background from "Finite element application to the s..."
...Equations (6) to (11) reduces to the following forms as...
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TL;DR: In this paper, the influence of micropolar lubrication on the stability of a constant flow valve compensated multi-recess conical hybrid journal bearing system has been investigated, and numerical simulated results indicate that the value of stability threshold speed margin gets increased substantially with the use of the viscous vis-a-vis Newtonian lubricant.
Abstract: The present paper investigates the influence of micropolar lubrication on the stability of a constant flow valve compensated multi-recess conical hybrid journal bearing system. Eringen's micropolar fluid theory has been used to model the micropolar lubrication in a fluid-film bearing system. The modified Reynolds equation of the micropolar lubricated bearing system has been solved using finite element method. Performance characteristics parameters of four pocket hybrid journal bearing system have been computed for the values of semi-cone angle 10°, 20° and for the judiciously selected micropolar parameters. Numerically simulated results indicate that the value of stability threshold speed margin gets increased substantially with the use of micropolar lubricant vis-a-vis Newtonian lubricant. Copyright © 2014 John Wiley & Sons, Ltd.
11 citations
Cites background from "Finite element application to the s..."
...Fluid-film thickness For a conical journal bearing system, the fluid-film thickness in non-dimensional form is expressed as 9 h 1⁄4 1 Xjcos α Zjsinα cos γ (5)...
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TL;DR: In this article, the authors have used the lubrication theory and the Computational Fluid Dynamics to simulate influence of flow capacity on temperature of sector cavity multi-pad hydrostatic thrust bearing, to gain relationship between inlet flow capacity and temperature.
Abstract: Temperature field of sector cavity multi-pad hydrostatic thrust bearing is significantly affected by flow capacity, and different flow capacity can carry different shearing heat, so temperature field of oil film is obviously changed. For this problem, the lubrication theory and the Computational Fluid Dynamics have been used to simulate influence of flow capacity on temperature of sector cavity multi-pad hydrostatic thrust bearing, to gain relationship between inlet flow capacity and temperature of sector cavity multi-pad hydrostatic thrust bearing, achieve the optimal design of such products. Results are shown that along with the flow capacity increasing, the temperature of hydrostatic thrust bearing also becomes lower under constant rotational speed condition.
3 citations
01 Apr 2020
TL;DR: Conical spindle distribution is a new type of hydraulic pump distribution, its steady working conditions refer to a stable position of the shaft and lubrication state under constant operating conditions as discussed by the authors.
Abstract: Conical spindle distribution is a new type of hydraulic pump distribution, its steady working conditions refer to a stable position of the shaft and lubrication state under constant operating condi...
2 citations
Cites methods from "Finite element application to the s..."
...In the one-dimensional flow state, he uses the analytic method to derive the pressure distribution expression and obtain the results of static load capacity, static stiffness, flow, frictional power consumption on the sealing surface, dynamic stiffness, damping, etc.(5,6) There is also research on parameter optimization of conical bearings....
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References
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141 citations
TL;DR: Finite element solution of incompressible lubrication problem by minimum principle for transient incompressibility Reynolds equation with boundary conditions as discussed by the authors, where the minimum principle is used to solve the problem.
Abstract: Finite element solution of incompressible lubrication problem by minimum principle for transient incompressible Reynolds equation with boundary conditions
134 citations
71 citations