Abstract:
In order to research the conical spiral groove aerodynamic
bearings, the bearing's lubrication analysis mathematical model is established.
The Reynolds equation of the laminar flow condition is used to calculate the
3D pressure distribution by the locally finite difference method. The influence
law of the gas film pressure distribution on the bearing performance is revealed
by researching the nonlinear dynamic characteristic of gas film. It reveals
the laws that the effect of the bearing structural parameters on the gas film
pressure distribution and the bearing capacity. The results show that the spiral
groove change the gas film thickness distribution and the gas film pressure
distribution and achieve good bearing dynamic pressure effect, which improve
the bearing performance and the bearing stability; The structure parameters
affect the gas film pressure distribution and the static characteristics. Therefore,
a reasonable choice of bearing structural parameters contributes to improve
the bearing's static characteristics and bearing capacity.
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