Dynamic effects of system parameters on speed ratio of floating ring bearing

Wenjing Zhang, Wei Chen*, Pei Li, Rixiu Men

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)


Ring speed ratio and whirl ratio of shaft are critical indicators of power consumption and stability of floating ring bearing for turbocharger rotor system supporting. Based on the classic short bearing method, an analytical model of nonlinear dynamic oil-film force of floating ring bearing was presented, and precession angular velocities of floating ring and shaft were token into account in this model. The curves of ring speed ratio-shaft rotating speed and whirl ratio of shaft-shaft rotating speed were got. At different rotating speeds, the dynamic influence mechanisms of system parameters, i. e. eccentric mass, lubricant viscosity, structural parameters of floating ring bearing on speed ratio, and the sensitivity of speed ratio to parameters were studied. The results could be used as an reference to the R&D design of floating ring bearing and system performance evaluation of turbocharger rotor system.

Original languageEnglish
Pages (from-to)160-166
Number of pages7
JournalSichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition)
Issue number3
Publication statusPublished - 20 May 2015
Externally publishedYes


  • Floating ring bearings
  • Ring speed ratio
  • System parameters
  • Transient load
  • Turbochargers
  • Whirl ratio


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