中期外文文献翻译.doc

原文 Design/methodology/approach – The modified Reynolds equation is obtained using the micropolar lubrication theory. The solution of the modified Reynolds equation is determined using finite difference technique. The static characteristics in terms of load-carrying capacity, attitude angle, side leakage and friction coefficient for micropolar and Newtonian fluids are determined for various values of eccentricity ratio and different values of elastic coefficient.Originality/value – It is concluded that the influence of elastic deformation on the bearing characteristics lubricated with micropolar fluids is significantly apparent compared with bearing lubricated with Newtonian fluids. Nomemclature B=width of the bearing c=the radial clearance co=elastic coefficient C f =friction coefficient e=eccentricity E=modulus of elasticity of the bearing F h =friction force Fˉ h =dimensionless friction force, Fˉ h =F h c/RLUμ g=function defined by equation (2) h=oil film thickness hˉ=dimensionless oil film thickness, h/c L=length ratio N=coupling number p=pressure pˉ=dimensionless pressure, p(c/R 2)/μω Q s =side leakage flow Qˉ s =dimensionless side leakage flow, Q s L/UR 2 c R=journal radius u, v, w=velocity components U=velocity of the journal W=bearing load W r , W t =load components in radial and tangential direction, respectively Wˉ=dimensionless bearing load, W(c/R)2/μωRL x, y, z=circumferential, radial and axial coordinates, respectively xˉ,yˉ,zˉ=dimensionless circumferential, radial and axial coordinates, respectively, x/R, y/h, z/L l=material length t=the bearing liner thickness ?=eccentricity ratio, e/c k v =spin viscosity μ v =viscosity coefficient for Newtonian fluid =angular coordinate μ=lubricant viscosity ρ=lubricant density φ=attitude angle ω=angular velocity of the journal 1 Introduction Lubricants in classical hydrodynamic and elastohydrodynamic lubrication analyses are assumed to behave as Newtonian fluids. The development in the field of lubrication in the re