Loader axle shaft finite element analysis based on load spectrum

A precise axle shaft model is built by CATIA part design module.To reduce the difficulty in mesh generation process,the axle is sliced into many simple geometric model.According to the different stress-strain characteristic of the various parts of axle,a multy-criterion mesh generation method is given before conducting the grid generation.Therefore,the quality and quantity of the mesh are strictly controlled to discretize the geometry model.The minimum number of node is constrained to eliminate the rigid body displacement.Finally,based on the load spectrum,the maximum torque on axle is determined,and also,a precise mapping relation between stress and load is obtained,which is of great significance for the follow-up axle fatigue analysis.