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Friction

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Nonlinear dynamic analysis of low viscosity fluid-lubricated tilting-pad journal bearing for different design parameters

  • Yingze Jin
  • Fei Chen
  • Jimin Xu
  • Xiaoyang YuanEmail author
Open Access
Research Article
  • 73 Downloads

Abstract

To reveal nonlinear dynamic rules of low viscosity fluid-lubricated tilting-pad journal bearings (TPJBs), the effects of design parameters on journal center orbits and dynamic minimum film thicknesses of water-lubricated TPJBs with and without static loads are investigated. The hydrodynamic bearing force used in the nonlinear dynamic analysis is an approximate analytical solution including the turbulence effect. The results reveal the methods for vibration suppression and load capacity improvement and give an optimal pivot offset and clearance ratio that can maximize the minimum film thickness. The results also show that four-pad TPJBs with loads between pads are preferred due to good dynamic performance and load capacity. This study would provide some guidance for nonlinear design of low viscosity fluid-lubricated TPJBs under dynamic loads.

Keywords

journal center orbit dynamic minimum film thickness tilting-pad journal bearing bearing design parameter 

Notes

Acknowledgements

This work is supported by National Basic Research Program of China (Grant No. 2015CB057303) and National Natural Science Foundation of China (Grant No. 51775412).

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Authors and Affiliations

  1. 1.Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing SystemXi’an Jiaotong UniversityXi’anChina
  2. 2.Institute of Tribology, School of Mechanical EngineeringHefei University of TechnologyHefeiChina

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