Comparative study between the parabolic and circular pads on the performance of the       hydrodynamic bearing

Taleb Hamad, Abdullah; Alaa Daham Younis, Dr.; Prof. Dr. Ibrahem Ali Muhsi, Asst.

doi:10.32894/kujss.2017.131536

Comparative study between the parabolic and circular pads on the performance of the hydrodynamic bearing

Authors

Abdullah taleb hamad

Dr. Alaa Daham Younis

Asst. Prof. Dr. Ibrahem Ali Muhsi

10.32894/kujss.2017.131536

Abstract

This work is a theoretical study of the performance of the hydrodynamic bearing having three pads ( parabola surface shape ) and this is compared with the performance of three circular shape pads . Reynolds equation is solved numerically using finite differences technique, A computer programe is build used the (MATLAB).The relationship between external load (W) and the pad tail displacement (g)is proportional, and also between (H) and (g) ، while the relationship between (Q) and (g) and between (Ф) and (g) are inverse proportional . The results of this research show that the pads tail displacement has a greater effect on this bearing performance (parabola shape) , than the tilt angle (α) on the bearing performance comparative with (circular shape).

Keywords

Bearing

Lubrication

Non circular bearing tilting pads