Analysis method for durability of drive axle bearing

The invention relates to a method for analyzing durability of a drive axle bearing, which comprises the following steps of: 1) collecting a load spectrum according to an actual road condition, and processing the load spectrum to generate a to-be-converted load spectrum; 2) converting the load spectrum to be converted into a simulation spectrum for analysis; 3) building a simulation model of the drive axle assembly, and importing the simulation spectrum to generate a circulation working condition of simulation analysis; and 4) operating the cyclic working condition to analyze the durability of the bearing to obtain an analysis result, and developing and designing the drive axle according to the analysis result. And the drive axle is developed and designed according to the determined durability of the bearing, so that the design accuracy is improved, the test reject ratio after the drive axle is developed and designed is reduced, the design modification time is greatly reduced, the design period is shortened, a