Numerical analysis reveals how porous material properties affect pressure distribution and performance metrics in tilt bearings, implying design improvements may be needed.
This study aims to investigate the effect of porous material properties on the tilt bearings characteristics. The tilt state of the bearing has a significant effect on the pressure distribution in the air film domain. The stiffness reaches its maximum value of 483 Nμm and the rotational stiffness is 9.02×10 5 Nm rad when the gas film thickness is 6 μm , the porous material thickness is 8 mm, the circle width is 25 mm and the permeability is 2×10 —15 m 2 . Changes in the permeability of the porous material have a greater effect on the bearing characteristics than changes in other bearing parameters, with the increased rate of the gas mass flow reaching 146%. For the characteristics of tilt porous mass aerostatic bearings, the porous permeability and the thickness are strong sensitivity parameters, and the circle width is the weak sensitivity parameter.
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Zhao et al. (2025) studied this question.
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