This article presents a novel calculation method for the bearing performance of the aerostatic thrust bearing. This method is provided while taking the fluid-structure coupling effect into account. High pressure air film leads to the structure deformation, thus the bearing clearance after deformation is utilized to estimate the real bearing performance. Furthermore, the influencing factors on the bearing performance, the thrust plate’s thickness, and the orifices’ location, are investigated on the basis of the fluid-structure coupling effect. The calculation method of the best gas film thickness is deduced and presented. Experimental results for validation highlight the reliability of this method.
ChangSHChanCWJengYR. Discharge coefficients in aerostatic bearings with inherent orifice-type restrictors. J Tribol2015; 137: 011705–1.
2.
NevesMTSchwarzVAMenonGJ. Discharge coefficient influence on the performance of aerostatic journal bearings. Tribol Int2010; 43: 746–751.
3.
LiuZSZhangGHXuHJ. Performance analysis of rotating externally pressurized air bearings. Proc IMechE Part J: J Engineering Tribology2009; 223: 654–663.
4.
ChenYSChiuCCChengYD. Influences of operational conditions and geometric parameters on the stiffness of aerostatic journal bearings. Precis Eng2010; 34: 722–734.
5.
ChenXDHeXM. The effect of the recess shape on performance analysis of the gas-lubricated bearing in optical lithography. Tribol Int2006; 39: 1336–1341.
6.
JengYRChangSH. Comparison between the effects of single-pad and double-pad aerostatic bearings with pocketed orifices on Bearing Stiffness. Tribol Int2013; 66: 12–18.
7.
ChangSHJengYR. A modified particle swarm optimization algorithm for the design of a double-pad aerostatic bearing with a pocketed orifice-type restrictor. ASME J Tribol2014; 136: 021701–021701.
8.
DuJJZhangGQLiuT. Improvement on load performance of externally pressurized gas journal bearings by opening pressure-equalizing grooves. Tribol Int2014; 73: 156–166.
9.
ChenYSChiuCCChengYD. Influences of operational conditions and geometric parameters on the stiffness of aerostatic journal bearings. Precis Eng2010; 34: 722–734.
10.
GuoLBWangZWSunA. Design of configuration parameters of externally pressurized spherical gas bearings with orifice compensation (in Chinese). J Harbin Inst Tech2005; 37: 1595–1598.
11.
LiYDingH. Influences of the geometrical parameters of aerostatic thrust bearing with pocketed orifice-type restrictor on its performance. Tribol Int2007; 40: 1120–1126.
12.
NishioUSomayaKYoshimotoS. Numerical calculation and experimental verification of static and dynamic characteristics of aerostatic thrust bearings with small feedholes. Tribol Int2011; 44: 1790–1795.
Fourka M and Bonis M. Comparison between externally pressurized gas thrust bearings with different orifice and porous feeding system. Wear 1997; 210: 311–317.
15.
Chen WQ, Liang YC, Sun YZ, et al. A novel dynamic modeling method for aerostatic spindle based on pressure distribution. J Vib Control 2015; 21: 3339–3347.
16.
MiyatakeMYoshimotoS. Numerical investigation of static and dynamic characteristics of aerostatic thrust bearings with small feed holes. Tribol Int2010; 43: 1353–1359.
17.
PandeSSSomasundaramS. Effect of manufacturing errors on the performance of aerostatic journal bearing. Wear1981; 66: 145–156.
