Numerical analysis on the static performance of tilting pad-journal gas bearing in subsystems

For tilting pad-journal bearing, each pad and the journal form a subsystem with its own local parameters reflecting the relative position of the journal and pad. In this paper, tilting pad-journal gas bearing has been studied numerically in perspective of subsystems to prevent pad spragging. The effect of eccentricity, preload and gas compressibility on local parameters have been studied in this fluid-solid coupled problem. Finite element method is adopted to solve the compressible Reynolds equation, and the load between pads configuration is chosen as a specific example.