Abstract
This paper deals with a preliminary computational analysis of the influence of the preload factor on the performance characteristics of gas-lubricated offset half bearings. A finite element procedure is devised to solve the lubrication equations rendered by a linearized perturbation method applied on the compressible Reynolds equation. High-order shape functions are employed in the fluid domain modeling to avoid numerical instabilities in the equation solver. Steady-state and dynamic performance characteristics of gas bearings with different values of preload are predicted at several operating conditions. Curves of the bearing characteristics are rendered to show the influence of the preload on the performance of offset half gas bearings at high speeds.
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