Abstract:In order to improve the bearing capacity and reduce temperature rise of water lubricated stern bearing,cavity structure was designed inside the bearing,and drainage holes of water was also designed inside the cavity.The model was established for the stern bearings with different inlet holes size,different number and size of drainage holes and different transition fillet of cavity edge.Statics analysis was carried out on the stern bearing model by ANSYS Workbench,and the influence of inlet and drainage holes and transition fillet on the mechanical property of water lubricated stern bearings was studied.The results show that with the increasing of inlet hole size,the maximum stress,strain and displacement are gradually decreased,but if the size is too big or too small,the stress concentration phenomenon is more obvious.The stern bearing with two drainage holes has better mechanical property than that with one drainage hole.Along with increasing of the radius of transition fillet of cavity edge,the stress,strain and displacement of bearing are gradually decreased,which shows that the smooth transition fillet can improve bearing mechanical property.