Analysis of Rotor Stability Supported by Surface Porous Layered Journal Bearing

  • C. Shravankumar
  • K. Jegadeesan
  • T. V. V. L. N. RaoEmail author
Part of the Materials Forming, Machining and Tribology book series (MFMT)


An analysis of modified Reynolds equation for surface porous layer configuration based on short (Ocvirk) bearing approximation is presented under dynamic conditions. The steady state pressure and dynamic pressure gradients are analyzed using Lund’s perturbation method. The nondimensional parameters of film thickness ratio of surface porous layers, dynamic viscosity ratio of surface layers, and permeability of porous layers are considered in the analysis. The stiffness and damping coefficients, threshold (critical) speed and whirl ratio (critical) for layered bearings are presented. An improvement in critical (threshold) speed of layer (film) journal bearings is evaluated.


Surface porous layer Dynamic analysis Critical speed Whirl ratio 


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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • C. Shravankumar
    • 1
  • K. Jegadeesan
    • 1
  • T. V. V. L. N. Rao
    • 1
    Email author
  1. 1.Department of Mechanical EngineeringSRM Institute of Science and TechnologyKattankulathurIndia

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