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Published in:
Introduction and Applications of Tribology Read chapter Read first chapter

2020 | OriginalPaper | Chapter

14. Analysis of Rotor Stability Supported by Surface Porous Layered Journal Bearing

Authors : C. Shravankumar, K. Jegadeesan, T. V. V. L. N. Rao

Published in: Tribology in Materials and Applications

Publisher: Springer International Publishing

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Abstract

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.

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previous chapter Tribo-mechanical Aspects in Micro-electro Mechanical Systems (MEMS)
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Metadata
Title
Analysis of Rotor Stability Supported by Surface Porous Layered Journal Bearing
Authors
C. Shravankumar
K. Jegadeesan
T. V. V. L. N. Rao
Copyright Year
2020
Book
Tribology in Materials and Applications

Print ISBN: 978-3-030-47450-8

Electronic ISBN: 978-3-030-47451-5

Copyright Year: 2020

DOI
https://doi.org/10.1007/978-3-030-47451-5_14

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