Due to the three-segment loop-like damage axially along inner surface of bearing sleeve under rolling loadcases, to quantitatively analyze damage mechanism, a mathematical model of oil-film bearing in the process of roll was developed by 3-D elastic contact boundary element method. A program of automatically creating 3-D surface grid model has been developed to check data and display deformation, the properties of stress and deformation fields have been analyzed, the rules of 3D contact pressure distribution among contact areas have been quantitatively described, which provided an effective way to decrease wear and adhesive damage of sleeve, and to increase load capacity of oil-film bearing and its service life as well.

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