Abstract:When the floating ring bearing rotor system rotates at a high speed,the oil film temperature rise and the floating ring elastic deformation are inevitable.In order to study the effect of the temperature rising of oil film and elastic deformation of floating ring on the oil film lubrication static characteristics of floating ring bearing under the coupling conditions,a thermalhydrodynamic model was established.Based on the coupling analysis of the oil film pressure field,temperature field and elastic deformation of floating ring,the temperature rise of oil film and elastic deformation of floating ring was obtained by using the numerical difference method to solve the Reynolds equation,energy equation,Rolelands viscosity temperature equation,floating ring elastic deformation equation and film thickness equation of the inner and outer oil film.The results shows that the temperature risng of the inner and outer oil film and the elastic deformation of the floating ring are increased gradually with the increasing of eccentricity.The temperature rising of the inner oil film is decreased and the temperature rising of the outer oil film is increased by the elastic deformation of the floating ring.The elastic deformation of floating ring is decreased by the oil film temperature rising.The carrying capacity,the side leakage flow,and the friction power consumption of the inner and outer oil film are reduced under the coupling condition.
