Stability performance of an adjustable multi‑pad fuid flm bearing profle under load‑between‑pad orientations

Girish, H and Pai, Raghuvir B (2022) Stability performance of an adjustable multi‑pad fuid flm bearing profle under load‑between‑pad orientations. International Journal of Dynamics and Control, 10. pp. 349-361. ISSN 2195-268X

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Abstract

A multi-pad bearing profle incorporated with innovative adjustable mechanism capable of controlling the dynamic behaviour of rotor bearing system is analysed in this study. The flm thickness variation occurring under pad displaced conditions are accurately predicted by utilising the developed flm thickness equation. The modifed form of flm thickness equation also takes account of the load positions and quasi-static adjustable pad motions in radial and tilt directions. The present study evaluates the efect of diferent load positions on the stability performance of multi pad adjustable bearing. Linear perturba�tion analysis is performed to compute the dynamic coefcients of rotor system. Simulations indicated that the flm thickness variation caused by pad adjustments signifcantly alters the bearing dynamic coefcients and attains an efcient control over bearing stability. For a given load position, negative radial adjustment of pads is found to enhance the stability regions of rotor system than other pad adjusted positions.

Item Type: Article
Uncontrolled Keywords: Active bearing · Film thickness · Load-between-pad · Stifness · Damping · Stability
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 08 Apr 2022 10:30
Last Modified: 08 Apr 2022 10:30
URI: http://eprints.manipal.edu/id/eprint/158545

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