Journal ArticleDOI
Stability of a Rigid Rotor Supported on Rough Oil Journal Bearings
B.C. Majumdar,M. K. Ghosh +1 more
TLDR
In this paper, the stability of rigid rotors supported on finite rough journal bearings using perturbation method was investigated and the effect of various surface roughness parameters on the stability was studied.Abstract:
This investigation deals with the stability of rigid rotors supported on finite rough oil journal bearings using perturbation method. The effect of various surface roughness parameters, viz., composite surface roughness, roughness orientation pattern and variance ratio on the stability has been studied. In general, surface roughness effect when incorporated into the analysis does not show a significant change in the stability for surfaces having same roughness structure. However, the effect of variance ratio (i.e., surfaces having different roughness structure) on stability is quite markedread more
Citations
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Journal ArticleDOI
Analysis of dynamic characteristics of hydrodynamic journal bearings with isotropic roughness effects
TL;DR: In this article, the concept of a stochastic process is applied to the problem of surface roughness in the dynamic characteristics of hydrodynamic journal bearings of finite width, and the roughness is uniformly distributed over the bearing surfaces with no preferred position or direction in the surface.
Journal ArticleDOI
Stability analysis of rough journal bearings under TEHL with non-Newtonian lubricants
TL;DR: In this article, the combined effects of surface roughness and lubricants rheology on stability of a rigid rotor supported on finite journal bearing under thermal elastohydrodynamic lubrication have been investigated using the transient method.
Numerical predictions and measurements in the lubrication of aeronautical engine and transmission components
TL;DR: In this article, the scope of the present work is discussed, as well as the current state of the art in the field of squeeze-weed film dampers and their application in aeronautical power systems.
Journal ArticleDOI
Influence of surface roughness effects on the performance of non-recessed hybrid journal bearings
TL;DR: In this paper, the effect of surface roughness on the performance of a capillary compensated hole-entry hybrid journal bearing system has been theoretically studied, and the impact of surface irregularity on the bearing performance has been analyzed for transverse, isotropic and longitudinal surface patterns.
Journal ArticleDOI
Linear Stability Analysis of a Rough Short Journal Bearing Lubricated with Non-Newtonian Fluids
TL;DR: In this paper, the combined effects of couple stresses and surface roughness on the instability threshold of hydrodynamic rotor bearings are theoretically studied, and the film pressure is solved from the generalized stochastic non-Newtonian Reynolds-type equation and applied to evaluate the equilibrium solution of a short journal bearing.
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