Analysis Of The Driving Bridge Shell Process Based On Finite Element Technology

Drive axle is an important part of car which supports the weight of the all car, different kinds of force and moment of force from road passing. So the bridge shell of drive axle must have sufficient strength, stiffness, dynamic properties and service life. However, the traditional design method waste time and energy, and has defects in design process which is hard to satisfy the design requirement. In this paper, we start from the design of bridge shell, and use different finite element analysis to analysis the different welding methods and the stamping bridge of drive axle which will get the best solution and process design method in different kinds of situation with comparison and analysis.The experiment get the force that meets flatten of bridge shell piece with ANSYS WORKBENCH by flatten analysis of bridge shell piece. We analyses three kinds of flatten by finite element analysis of drive axle bridge shell, and concludes that bridge shell stress is minimum after flatten. That provides a new design method for the process design of drive axle by the way of flatten based on finite element analysis.For the two kinds of welding process and welding and fillet welding model, the static simulation of drive axle housing for working conditions. Firstly, with the weld model into ANSYS WORKBENCH mesh generation of finite element model. Simulation of the boundary conditions of axle housing in the four conditions and the stress, the static solution. Found in the process of static analysis:for two kinds of welding methods, bridge shell stress and the maximum stress is less than the material yield limit. The bridge shell butt welding method is found in the bushes and axle housing body contact surface the maximum stress; bridge shell deformation were in the normal range; the safety factor of axle housing is greater than the minimum safety factor; and the bridge shell welding way easy minimum safety factor appears in the Bush and the bridge shell body contact surface, the site it may also appear in the use of the process of fatigue failure.By using the method of analyzing the static simulation, the contrastive analysis of different welding process of an axle, it is found that the stress bridge shell with different welding process, deformation and safety factor is increased, the performance will be improved, and the different welding process, improve the effect are different. In order to verify the correctness of the welding technology, reliability and practicability.