Numerical analysis of the effect of elastic deformation on the static characteristics of a circular journal bearing lubricated with a ferrofluid

被引:0
|
作者
Azzala, Abdellah [1 ,2 ]
Chetti, Boualem [2 ]
Zidane, Ibrahim [3 ]
机构
[1] Hassiba Benbouali Univ Chlef, Fac Technol, Mech Engn Dept, Natl Rd N 19, Hay Salem 02000, Algeria
[2] Univ Khemis Miliana, Fac Sci & Technol, Lab Ind Fluids Measurements & Appliquat FIMA, AinDefla, Algeria
[3] Hassiba Benbouali Univ Chlef, Fac Technol, Lab Rheol & Mech LRM, Hay Salem, Algeria
关键词
Journal bearings; ferrofluids; elastic deformation; magnetic field; finite difference technique; static characteristics; SURFACE-ROUGHNESS; PERFORMANCE; FLUIDS;
D O I
10.1177/13506501241272575
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The present study investigates the effect of elastic deformation on the static characteristics of a circular journal bearing operating with a ferrofluids. Applying momentum and continuity equation, for ferrofluid under the applied magnetic field, the modified Reynolds equation is derived using the Neuinger-Rosensweig model. A magnetic field is created by displaced finite wire. The elastic thin liner model is used for determining the displacement field at the fluid film bearing liner interface. To obtain the pressure distribution, the modified Reynolds equation is solved using finite difference technique with appropriate iterative technique incorporating Reynolds boundary conditions. The static performance characteristics for journal bearing in terms of the load carrying capacity, the attitude angle, friction coefficient and the side leakage are studied for various values of the magnetic force coefficient and the elastic deformation coefficient. According to the results obtained, it is found that the increasing of magnetic force coefficient produces an increase of the film pressure, load carrying capacity, attitude angle and side leakage, while it decreases the friction coefficient increases. In addition, it is found that the effect of the elastic deformation on the static characteristics for the journal bearing is depending to the values of the eccentricity ratio and the magnetic force coefficient. The presence of magnetic fields significantly enhances the performance of a rigid and deformable journal bearing.
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页码:26 / 36
页数:11
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