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Acta Mechanica Solida Sinica

, Volume 20, Issue 4, pp 309–316 | Cite as

Nonlinear numerical analysis of a flexible rotor equipped with squeeze couple stress fluid film journal bearings

  • Cai-Wan Chang-Jian
  • Her-Terng Yau
Article

Abstract

This study performs a dynamic analysis of a rotor supported by two squeeze couple stress fluid film journal bearings with nonlinear suspension. The numerical results show that the stability of the system varies with the non-dimensional speed ratios and the dimensionless parameter l*. It is found that the system is more stable with higher dimensionless parameter l*. Thus it can conclude that the rotor-bearing system lubricated with the couple stress fluid is more stable than that with the conventional Newtonian fluid. The modeling results thus obtained by using the method proposed in this paper can be used to predict the stability of the rotor-bearing system and the undesirable behavior of the rotor and bearing center can be avoided.

Key words

couple stress fluid rotor-bearing system bifurcation chaos squeeze 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2007

Authors and Affiliations

  1. 1.Department of Mechanical and Automation EngineeringI-Shou UniversityKaohsiung County, TaiwanChina
  2. 2.Department of Electrical EngineeringFar-East CollegeTainan County, TaiwanChina

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