为分析局部磨损和空化效应对径向滑动轴承混合润滑性能的影响，基于平均Reynolds 方程及 JFO 空化边界条件建立了计入局部磨损的轴承混合润滑模型，通过数值求解研究了不同磨损深度对轴承油膜厚度分布、平均流体动压力分布、轴心位置和 Stri-beck 曲线的影响。结果表明: 局部磨损显著改变了油膜厚度分布和平均流体动压力分布; 大磨损深度导致轴心位置改变，偏离原来设计; 小磨损深度降低了轴承混合润滑阶段的摩擦系数，且能以更低的速度从混合润滑过渡到流体动压润滑; 摩擦系数随着磨损深度的增加而增大。

A mixed hydrodynamic lubrication model of bearing with local wear was established based on the ave-raged Ｒeynolds equation and JFO cavitation boundary condition，in order to analyze the effects of local wear and cavitation effect on the mixed lubrication performance of journal bearing． The effect of different maximum wear depths on oil film thickness distribution，average hydrodynamic pressure distribution，position of axial center and Stribeck curves of the bearing were investigated by numerical solution． The results show that local wear significantly changes oil film thickness distribution and average hydrodynamic pressure distribution． The large wear depths lead to the change of the position of axial center，which deviates from the original design． The small wear depths reduce the friction coefficient of the bearing in mixed-lubrication regime，and can transfer from mixed-lubrication to hydro-dynamic lubrication at a lower speed． The friction coefficient increases with the increase of the wear depth．