关键词: 驱动桥壳；Workbench；等效应力；变形量

Abstract: Drive axle is an important part of automotive powertrain and load system, taking a type of truck drive axle housing as the research object, using UG establish the three dimensional model, according to the maximum vertical force, maximum tractive force, maximum braking force and maximum lateral force conditions, the simulation force analysis is carried out, getting the stress of the drive axle housing under different working conditions. Using the Workbench conduct simulation analysis, by adding material properties, meshing and applying reasonable boundary conditions, getting the maximum equivalent stress and maximum deformation of corresponding conditions. Through four types of analysis and comparison of the working condition, the stress under maximum braking force condition and maximum lateral force condition is larger, and the stress under these two conditions should be fully considered in the design; The deformation is greatest under lateral force condition, getting the drive axle housing likely to occur stress damage and deformation of the largest position, the position where the drive axle housing is prone to stress failure is the connection position between the axle axle sleeve and the spring fixing seat and the axle housing body, and the two positions should be rationally arranged. Research result provides the reference for the design of the drive axle housing.

Key words: Drive axle housing; Workbench; Equivalent stress; The deformation