Based on analyzing the structural characteristics of the wire-cut integrated hydrodynamic(WCI) bearing,overlapping grid technology of CFD software was adopt to build up the numerical calculation modal of the bearing.Considering the three-dimensional deformation of the flexible support,the effect of the thickness of the bearing bush,the height of the hinge support and the width of the support on the load-bearing characteristics of the WCI bearing was investigated by use of the two-way fluid-structure coupling method.The results show that with the increase of eccentricity or rotating speed,the bearing deflection angle decreases,and the viscosity resistance and load increase.Compared with not considering the support deformation,the support deformation will reduce the rotational stiffness and radial stiffness of the pad,reduce the bearing load of the WCI bearing,but can improve the static characteristics of the bearing.The width and height of the flexible support have a greater impact on the load-bearing characteristics of the WCI bearing than the thickness of the bearing bush.The bearing performance tends to fixed pad bearings through reducing its support height or increasing its support width.It provides a theoretical basis for the design of the wire-cut integrated hydrodynamic bearing.