The Analysis Of Structural Strength Of The Micro-Car Drive Axle Housing

In all the car driving conditions, as an important part of the chassis, drive axle housing bears the complex load, it is easy to crack because of the fatigue or the lack of strength or stiffness, which causes the use of the drive axle failure. In order to improve the life of the drive axle housing and to ensure the rationality of its design, we need to make a rational finit element analysis.This paper mainly discusses the finit element analysis of a micro-car drive axle housing. Firstly, establish the simplified entity model of the drive axle housing with UG software. Secondly, mesh the entity modal with the appropriate element type in Hypermesh software. And then import the gridding model to ANSYS software.Use ANSYS to make the static analysis of four typical conditions for axle housing, and get the corresponding distribution of stress and deformation, the results show that the strength and stiffness of axle housing meet the requirements. Make a modal analysis to get the first six natural frequencies and vibration shapes, the results show that the axle housing can not occur resonance because of the excitation of road and engine, so the design of the axle housing is rational. On the basis of static analysis, use the fatigue module in ANSYS to make the fatigue analysis for the axle housing, and obtain the dangerous position and the corresponding fatigue life, results show that fatigue life of the axle housing meets the requirements. In addition, in order to verify the accaracy of the finite element modal, make the finite element simulation for the test of axle housing, the results show that the finite element model is accurate and the finite element method is feasible. These results of the finite element analysis can provide some referece for the improved design and structure optimization in the future.