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Numerical analysis of the dynamic performance of aerostatic thrust bearings with different restrictors

Journal Article


Abstract


  • This study utilizes a dynamic mesh technology to investigate the dynamic performance of aerostatic thrust bearings with orifice restrictor, multiple restrictors, and porous restrictor. An experiment, which investigates the bearing static load capacity, was carried out to verify the calculation accuracy of dynamic mesh technology. Further, the impact of incentive amplitude, incentive frequency, axial eccentricity ratio, and non-flatness on the bearing dynamic performance was also studied. The results show incentive amplitude effect can be ignored at the condition of amplitude less than 5% film thickness, while the relationship between dynamic characteristics and incentive frequency presented a strong nonlinear relationship in the whole frequency range. The change law of dynamic stiffness and damping coefficient for porous restrictor was quite different from orifice restrictor and multiple restrictors. The bearing dynamic performance increased significantly with the growth of axial eccentricity ratio, and the surface non-flatness enhanced dynamic performance of aerostatic thrust bearings.

UOW Authors


  •   Cui, Hailong (external author)
  •   Wang, Yang (external author)
  •   Yue, Xiaobin (external author)
  •   Li, Yifei (external author)
  •   Jiang, Zhengyi

Publication Date


  • 2019

Citation


  • Cui, H., Wang, Y., Yue, X., Li, Y. & Jiang, Z. (2019). Numerical analysis of the dynamic performance of aerostatic thrust bearings with different restrictors. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 233 (3), 406-423.

Scopus Eid


  • 2-s2.0-85048047081

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/2341

Number Of Pages


  • 17

Start Page


  • 406

End Page


  • 423

Volume


  • 233

Issue


  • 3

Place Of Publication


  • United Kingdom

Abstract


  • This study utilizes a dynamic mesh technology to investigate the dynamic performance of aerostatic thrust bearings with orifice restrictor, multiple restrictors, and porous restrictor. An experiment, which investigates the bearing static load capacity, was carried out to verify the calculation accuracy of dynamic mesh technology. Further, the impact of incentive amplitude, incentive frequency, axial eccentricity ratio, and non-flatness on the bearing dynamic performance was also studied. The results show incentive amplitude effect can be ignored at the condition of amplitude less than 5% film thickness, while the relationship between dynamic characteristics and incentive frequency presented a strong nonlinear relationship in the whole frequency range. The change law of dynamic stiffness and damping coefficient for porous restrictor was quite different from orifice restrictor and multiple restrictors. The bearing dynamic performance increased significantly with the growth of axial eccentricity ratio, and the surface non-flatness enhanced dynamic performance of aerostatic thrust bearings.

UOW Authors


  •   Cui, Hailong (external author)
  •   Wang, Yang (external author)
  •   Yue, Xiaobin (external author)
  •   Li, Yifei (external author)
  •   Jiang, Zhengyi

Publication Date


  • 2019

Citation


  • Cui, H., Wang, Y., Yue, X., Li, Y. & Jiang, Z. (2019). Numerical analysis of the dynamic performance of aerostatic thrust bearings with different restrictors. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 233 (3), 406-423.

Scopus Eid


  • 2-s2.0-85048047081

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/2341

Number Of Pages


  • 17

Start Page


  • 406

End Page


  • 423

Volume


  • 233

Issue


  • 3

Place Of Publication


  • United Kingdom