Dynamic Simulation And Finite Element Analysis Of Helical Gear Limited Slip Differential

Limited slip differential can effectively solve the shortcomings of ordinary differential,and enhance the vehicle’s passing ability when the road adhesion coefficient is small.It is an important part of the vehicle chassis power transmission system.In this paper,the helical gear limited slip differential is selected as the design object according to the parameters of the target vehicle.The helical gear limited slip differential is deeply studied by combining multi-body dynamics simulation theory,finite element simulation analysis and optimization design method.The main contents are as follows:1)Introduce the internal structure and working principle of all kinds of limited slip differentials according to the structure form,select helical tooth limited slip differentials as the research object for the target vehicle,discuss the limited slip principle of helical tooth limited slip differentials,and analyze the stress of their internal gears in the working state.2)According to the relevant information,the design of helical gear limited slip differential is carried out for the target vehicle.The parametric modeling of parts is carried out by SolidWorks software,and the virtual assembly of the model is carried out,which provides the basis for the following dynamic simulation and finite element analysis.3)A virtual prototype model of helical gear limited slip differential is created in ADAMS simulation software.Velocity analysis,torque analysis and force analysis of internal gear of helical gear limited slip differential under two working conditions of good road surface and wheel slip on one side are carried out to verify the correctness and rationality of the design model.4)The finite element simulation software is used to carry out modal analysis of the helical gear limited slip differential shell,and the simulation data are compared with the theoretical values to prove that the shell can effectively avoid the resonance area when it is running;the stress and strain analysis of the shell and the end cover are carried out,and then the shell and the end cover are optimized respectively,and the optimized shell and the end cover are modal analysis again.Strength analysis proves that the optimized model can achieve lightweight structure and save processing costs.