slide journal bearing by considering oil inlet hole

HEI Di, ZHENG Meiru

(Department of Mechanical and Electrical Engineering, Shanxi Railway Institute, Weinan 714000, China)

Abstract: Aiming at the solution of oil film force of finite length slide bearing with oil inlet hole, the approximate analytical expression of the oil film pressure distribution of finite length bearing was presented by method of variational principle and the separation of variables. Oil film force could be obtained by integrating the approximate analytical expression of the oil film pressure distribution in the oil film field. The comparison was implemented between the presented calculation method of oil film force, infinite length bearing model and FEM. The results calculated by the presented method were in good agreement with FEM. Finally, the influences of the oil inlet position and oil inlet pressure on the oil film field and oil film force were studied. The research results show that the oil inlet position and oil inlet pressure can produce a significant effect on the oil film field and oil film force.

Key words: oil film force, finite length bearing, influence of the oil inlet pressure, influence of the oil inlet position, approximate analytical expression