Abstract
Efforts have been directed to study and analyze the squeeze film performance between rotating transversely rough curved porous annular plates in the presence of a magnetic fluid lubricant considering the effect of elastic deformation. A stochastic random variable with nonzero mean, variance, and skewness characterizes the random roughness of the bearing surfaces. With the aid of suitable boundary conditions, the associated stochastically averaged Reynolds' equation is solved to obtain the pressure distribution in turn, which results in the calculation of the load-carrying capacity. The graphical representations establish that the transverse roughness, in general, adversely affects the performance characteristics. However, the magnetization registers a relatively improved performance. It is found that the deformation causes reduced load-carrying capacity which gets further decreased by the porosity. This investigation tends to indicate that the adverse effect of porosity, standard deviation and deformation can be compensated to certain extent by the positive effect of the magnetic fluid lubricant in the case of negatively skewed roughness by choosing the rotational inertia and the aspect ratio, especially for suitable ratio of curvature parameters.
Highlights
It was Archibald [1] who presented the behaviour of squeeze films between various geometrical configurations for the flat surfaces
Patel and Deheri [7] studied the behavior of squeeze film between curved circular plates considering the film thickness described by a hyperbolic expression
Prajapati [23] discussed the performance of a squeeze film between rotating porous circular plates and studied the effects of the surface roughness along with elastic deformation, Prakash and Peeken [31] investigated the effect of surface roughness and elastic deformations in one-dimensional slider bearing and found the existence of strong interaction between the roughness and elastic deformation
Summary
It was Archibald [1] who presented the behaviour of squeeze films between various geometrical configurations for the flat surfaces. Andharia et al [26, 27] presented a study dealing with the effect of surface roughness on the performance of a squeeze film bearing making use of the general stochastic analysis. Prajapati [23] discussed the performance of a squeeze film between rotating porous circular plates and studied the effects of the surface roughness along with elastic deformation, Prakash and Peeken [31] investigated the effect of surface roughness and elastic deformations in one-dimensional slider bearing and found the existence of strong interaction between the roughness and elastic deformation. Elastic deformation effect on the behaviour of a squeeze film between rotating porous circular plates with concentric circular pockets in the presence of a magnetic fluid lubricant. Efforts have been made here to deal with the combined effect of surface roughness and deformation on the squeeze film performance in curved porous-rotating annular plates in the presence of a magnetic fluid lubricant
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