SKF bearings in rotating machinery applications, its working pressure between the rotor and bearing oil film. Oil-film pressure acting on the bearing alloy layer, cycle of the alternating stress is the main reason leading to deformation of bearing failure. Stress calculations and bearing alloy layer of oil film pressure distribution of SKF bearing is important theoretical basis for design and failure analysis. Film plays not only to withstand loads, friction reduction, elimination of wear, from a dynamic point of view, of dynamic characteristics of oil film on the dynamic characteristics of rotor system as a whole has a big impact. It is also a supporting Foundation of the rotor part of this system.
Film plays not only to withstand loads, friction reduction, elimination of wear, from a dynamic point of view, it is also a supporting Foundation of the rotor part of this system. Oil film is usually non-linear springs and damping. Since most such problems involved only small amplitude or infinitely small amplitude, so the film can often be approximated as a linear spring constants, and damping characteristics, usually called these linear dynamic behavior of oil film stiffness and damping, oil film stiffness and damping coefficients for solving are described below. This article on SKF bearing oil film pressure and stress distribution on bearing alloy layers have been studied, in solving the oil film pressure distribution on the basis of a study on the dynamic characteristics of the SKF bearing, solving the dynamic coefficients of SKF bearings, mainly drew the following conclusions:
1) from the oil film pressure distribution pressure distribution of SKF bearings can be drawn for the approximate distribution of parabolic. Dimensionless oil-film pressure in a stretch of increases to the maximum pressure value, then declined sharply, at >180.
2) alloy layer of SKF bearings under stress arising out of oil film pressure distribution of oil film pressure distribution of basically the same stress peak value of 20. 702 MPa． Peak shear stress area for pressure and pressure gradient in a large area around maximum shear stress for 8. 375 MPa．
3) dimensionless SKF bearing oil film stiffness and damping coefficients as the heart rate increases and increased cross-damping factor approximately equal.