Performance Estimation And Optimization Of Integrally Casting Driving Axle Housing

The driving axle housing is one of the automobile main parts, whose performance is closely linked ride comfortableness and safety of the vehicle, in the course of automobile driving. So the axle housing should have sufficient strength and stiffness. The traditional design method of the axle housing can’t meet modern vehicle’s fast development needs. At present, FEM is widely applied based on the development of computer science technology, which provides new tool for performance analysis and optimization of the axle housing.Integrally casting driving axle housing is the type of the driving axle housing, which is supplied with a certain type of self-dump truck. The axle housing is researched as an example in this paper. Finite element model of the axle housing is built through ANSYS. According to actual loading condition of the axle housing, structural analysis is simulated. Stress distribution and deformation results of the driving axle housing are obtained about four conditions of impact load, maximum tractive force, maximum braking force and maximum lateral force. According to auto industry standard, bench fatigue test of the axle housing is simulated based on fatigue damage accumulation theory. Structure analysis of the axle housing shows that stress is the maximum in the lateral force condition. So the axle housing is optimized about reducing stress in the condition. At last, modal analysis results of optimized axle housing are gained. Six modal shape and natural frequencies of the axle housing are obtained through using Sub-Problem method, which compares with original axle housing.The analysis method is based on finite element theory in this paper. Structural performance of the axle housing is analyzed, and then the axle housing is optimized about reducing the maximum equivalent stress by adopting this method. It is the purpose that it can obtain reference valuable concrete method.