Dynamic Characteristics and Stability of Short Wave Journal Bearings

Abstract

A general analysis has been done to investigate the dynamic performance and stability of short wave journal bearing. Reynolds equation is solved for unsteady-state operations. The unsteady analysis has been used to determine the rotor dynamic coefficients for various eccentricity ratios and wave eccentricity ratios. These coefficients has been used to determine the stability parameters such as critical mass and whirl ratio to show that wave bearing provides better stability at higher speed than circular bearing.

Application of Rabinowitsch Fluid Model to Pivoted Curved Slider Bearings

“…wherep o is the steady state pressure. With the expressions for h m andp in equation (17)(18), the Reynolds equation 15 (19) Expanding and comparing the real and imaginary parts of equation 19, the Reynolds equation under steady state is obtained as (20) and the Reynolds equation under damping condition is obtained as…”