Based on the ferrohydrodynamic theory by R. E. Rosensweig and continuity equation, ferrofluid (FF) lubricated different exponential squeeze film-bearing designs are studied. Since uniform magnetic field does not effect on the performance of the bearing design system, variable form of magnetic field is considered to control FF flow behaviour. Expressions for pressure and load-carrying capacity are obtained by the methods of averaged inertia and regular perturbation. Results for dimensionless load-carrying capacity are calculated and compared. Some comparisons are also made with the previous study. Results show the significant contribution of FF on the designed problem.

中文翻译：

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对铁磁润滑的指数挤压薄膜轴承

基于RE Rosensweig提出的铁流体动力学理论和连续性方程，研究了铁磁流体（FF）润滑不同指数挤压膜的设计。由于均匀的磁场不会影响轴承设计系统的性能，因此可以考虑使用可变形式的磁场来控制FF流动行为。通过平均惯性和规则扰动的方法获得压力和承载能力的表达式。计算并比较无量纲承载能力的结果。与以前的研究也作了一些比较。结果表明，FF对设计问题有重大贡献。