Calculation method and simulation analysis of characteristic frequency of rolling bearing in high speed train
Aiming at the working characteristics of high-speed train rolling bearings,the characteristic frequency variation of rolling bearings under intact and damaged conditions was studied.The deformation law of bearing components under interaction was analyzed based on the Hertz contact theory and the actual contact state of bearings.A characteristic frequency calculation model was established taking into account the deflection change of bearing contact parts.The influence law of rotational speed on the characteristic frequency of VA3881 rolling bearings under normal and damaged conditions was studied.The results showed that the vibration frequency characteristics were affected by the bearing speed,and the characteristic frequency increased with the increase of the speed.The finite element transient dynamics simulation model was used to verify the established calculation model,and the simulation results were consistent with the theoretical calculation results,which proved the rationality and correctness of the established model and simulation results.This research provides a reasonable method for bearing fault diagnosis.
hertz contact theoryrolling bearingcharacteristic frequencyfinite element analysis
万方数据
维普
