Preload Simulation of Aerodynamic Multi-leaf Foil Journal Bearing
In order to obtain the states of various components in the assembly process of the aerodynamic multi-leaf foil journal bearing with a large preload,a nonlinear contact model was established based on the explicit dynamic method,and the effects of the preload amount and static eccentricity on the surface stress distribution of the rotating shaft were discussed.The research results show that the stress of the multi-leaf foil structure is greater in the foil overlap area and the contact area with the rotating shaft.When there is no static eccentricity,the stress distribution on the surface of the rotating shaft is periodic symmetry,and when there is static eccentricity,it is in cosine form,and the number of stress peaks and troughs is consistent with the leaf's number.At the same time,the greater the preload,the greater the surface stress,and the greater the static eccentricity,the greater the peak-valley stress difference in the main bearing zone on the surface of the rotating shaft.
万方数据
维普
