An investigation to the combined effect of non-uniform permeability and shaft misalignment on the performance of porous bearings

الملخص EN

A porous bearing with misaligned journal and non uniform permeability has been investigated through the present work.

The Reynolds' boundary condition has been used to determine the boundary of the effective oil film.

Two types of misalignment, axial (vertical displacement) and twisting (horizontal displacement) with different values have been adopted.

Two models are considered to analyze a finite porous bearing with misaligned shaft and non uniform permeability.

In the first model the permeability a cross the radial direction has been varied, while in the other model the axial permeability has been varied.

Effect of different supply pressure and misalignment are investigated for a particular bearing permeability.

It was found that there is a slight effect to the supply pressure on the performance parameters of the porous bearing.

Varying the permeability in radial and axial direction cause an increase of load carrying capacity with slight increase in coefficient of friction.

It is also noticed that the journal misalignment has a considerable effect on the bearing performance.