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Influence of Blending Nanoparticles with Lubricating Oils on the Performance of Rotor Bearings Systems


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DOI: https://doi.org/10.15866/ireme.v15i10.21528

Abstract


The dynamic performance of rotor and bearings of rotating systems due to using a blend of nanoparticles and lubricants oils has been studied. The modified oil viscosity of the blend of nanoparticles with the lubricants is used to compute the bearings forces, pressure, stiffness and damping parameters, theoretically using the Reynolds equation. The study results show that the lubricating oil blend pressure is significantly increased when the percentage of aggregate and volume nanoparticles fractions are increased up to 130° angular position and then it is decreased. Generally, the bearings dynamic parameters (stiffness and damping) are reasonably improved. The dynamical response displacement is increased when the aggregate and volume fractions are increasing. The blending of nanoparticles with lubricating oils has no influence on the critical angular speed of rotor shaft.
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Keywords


Critical Speed; Dynamic Response; Dynamic Parameters; Journal Bearing; Nanoparticles

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References


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