Abstract
Static and dynamic performance parameters of three-lobe fluid film bearing, operating with TiO2-based non-Newtonian lubricant, are obtained. The Krieger–Dougherty model of effective is used to obtain the viscosity of nanolubricant for a fixed concentration of nanoparticle dispersed in base lubricant. Reynolds equation is modified to incorporate couple stress effect, and then, finite difference method (FDM) is used to solve it to obtain different performance parameter. For varying concentration of nanoparticle in base lubricant, direct and cross-coupled dynamic coefficients (stiffness and damping) are obtained. Results show that flow coefficient and load carrying capacity increases, whereas friction variable decreases, but it does not disturb the stability of three-lobe fluid film bearing working with TiO2-based non-Newtonian lubricant. Dynamic coefficients and attitude angle do not vary with the concentration of solid nanoparticle for a fixed couple stress parameters.
Published Version
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