Externally-Pressurized Gas-Lubricated Floating-Ring Porous Journal Bearings Part 2: Dynamical State Analysis

Malik, M.; Hori, Yukio

doi:10.1243/pime_proc_1986_200_102_02

Cited by 2 publications

(1 citation statement)

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“…Author has compared the steady-state performance of gas-lubricated FRB with externally pressurized plain porous journal bearing. Malik and Hori 17 presented the dynamic characteristics of the externally pressurized gas-lubricated floating ring porous bearing in which both the fixed bearing shell and a floating ring, of porous materials. Authors have described the stability margin and whirl frequency ratio of the porous type of floating ring journal bearing.…”

Section: Introductionmentioning

confidence: 99%

Dynamic performance analysis of a noncircular cylindrical floating ring bearing

Soni

Vakharia

2016

Proceedings of the Institution of Mechanical Engineers, Part J:

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The performance of a noncircular cylindrical floating ring bearing under the laminar flow condition has been analyzed. The noncircular cylindrical floating ring bearing is a modified version of the plain cylindrical floating ring bearing in which the outer bearing of the cylindrical floating ring bearing is changed in the form of lobed pattern. The noncircular patterns are known for its better stability and stiffness behavior according to the magnitude of applied loads. The finite element analysis has been used to solve the classical Navier–Stokes equations in the cylindrical coordinates of the modified form along with the continuity equation that represents the fluid flow field in the clearance space of the noncircular cylindrical floating ring bearing. The numerical data are for a proposed bearing with the length to diameter ratio of 1.0, and values of the ratio of film clearances of 0.70 and 1.30. Performance characteristics of a finite noncircular cylindrical floating ring bearing has been studied in terms of the inner and outer film eccentricity ratio, Sommerfeld number, attitude angle, stiffness and damping coefficients, equivalent support stiffness coefficient, whirl frequency ratio, and critical journal mass at various values of the outer film eccentricity ratios. The proposed analysis disseminates that the dynamic performance parameters of the noncircular cylindrical floating ring bearing are much better than the plain cylindrical floating ring bearing.

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Section: Introductionmentioning

confidence: 99%