Research on the Characteristics of Bearing behavior of the Profiled Throttling Cavity Air Bearing

The finite volume method was used to study three freedom special throttling cavity characteristics. Based on the internal flow field simulation of three degrees of freedom the profiled throttling cavity air bearing analysis of bearing, analyzed effective of rotating speed and gas pressure on the air bearing characteristics and the different carrying capacity between profiled and conventional structure of air bearing is compared. The results show that, with three degrees of freedom profiled throttling cavity a characteristics have a nonlinear relationship with gas pressure and rotating speed, in order to make the bearing capacity in the optimal value, it should make supply pressure and bearing speed to be limited; special-shaped throttling cavity structure, compared with the conventional throttling cavity structure, at the same condition, the carrying capacity has a larger increase, profiled throttling cavity air bearing has more excellent bearing capacity.