To investigate the dynamic characteristics of gas bearings with holes of tangential supply (TS bearing), drawing on the modified Reynolds equations proposed by Mori, we present new governing equations and their reasonable boundary conditions. Using this mathematical model, the inertia effect of the supplied gas on the aerodynamic film force can be evaluated properly. The governing equations are solved numerically using Finite Element Method (FEM), and the pressure distribution of the gas in the bearing, the critical whirl ratio and so on, are calculated for a typical design. Some results for a cylindrical journal bearing (CJ bearing) and ordinary bearing with holes of radial supply (RS bearing) are also provided for comparison.
Issue Section:
Research Papers
1.
Chen
C. Z.
Xia
X. Z.
1986
, “Stability of Externally Pressurized Gas Bearings for the Cryogenic Expansion Turbines
,” Cryogenics
, Vol. 26
, p. 423
423
.2.
Han
D.
1994
, “A Study on the Characteristics of Externally Pressurized Air Bearings
,” Precision Engineering
, Vol. 16
, p. 169
169
.3.
Lund
J. W.
1987
, “Review of the Concept of Dynamic Coefficients for Fluid Film Journal Bearings
,” ASME JOURNAL OF TRIBOLOGY
, Vol. 109
, pp. 37
–41
.4.
Mori
A.
Aoyama
K.
Mori
H.
1980
, “Influence of the Gas-Film Inertia Forces on the Dynamic Characteristics of Externally Pressurized, Gas Lubricated Journal Bearings—Part I
,” Bulletin of JSME
, Vol. 23
, pp. 582
–586
.5.
Tondl, A., 1967, “Bearings with a Tangential Gas Supply,” University of Southampton, Department of Mechanical Engineering, Gas Bearing Symposium, paper no. 4.
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