The floating ring will generate elastic deformation under the effect of the lubricated film pressure for high-speed journal floating ring bearing,which affects the bearing lubrication performance.For a floating ring hydrodynamic/hydrostatic bearing with deep/shallow pockets,the finite element method and finite difference method were employed to solve Reynolds equation coupled with energy equation and temperature-viscosity equation,and the deformation matrix method was applied to solve the elastic deformation equation.The floating ring deformation distribution was obtained,and the influences of deformation on the ring speed ratio,load carrying capacity and oil flow leakage were analyzed based on floating ring equilibrium.The results indicate that the elastic deformation distribution is consistent with film pressure field,and the elastic deformation increases with the increase of shaft speed and eccentricity.While considering floating elastic deformation and the floating ring reaches equilibrium,the inner film eccentricity ratio increases,the ring speed ratio drops,and both load carrying capacity and friction moment increase.Due to the different influence of the elastic deformation on inner and outer clearances and flow resistances,inner film flow leakage grows,whereas the outer film flow leakage drops.