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Research on the oil film pressure of floating ring bearing in the steady dynamic state

Song Yuchuan, Liu Hongdan, Jiang Meili, Zhou Peng, Lei Qi

Based on the theory of hydrodynamic lubrication, the inner and outer oil film pressure and capacity of floating ring bearings (FRBs) in the steady dynamic state were researched. According to the lubrication mechanism of FRB, dynamic load Reynolds equation about the inner and outer oil film pressure was deduced at first, then film pressure distribution at the finite-length and Reynolds boundary conditions was solved and simulated by using finite difference method and MATLAB. Moreover, the relationship of film pressure and load-carrying capacity vary with the eccentricity and the ratio of width to diameter were also studied. Research indicates that film pressure of FRB changes periodically with time in the steady dynamic state. The higher the eccentricity or the ratio of width to diameter, the greater the film pressure and the load-carrying capacity