In order to work on the car differential straight bevel gear system features further study

taking the automobile differential straight bevel gear as study object

by using the finite element method for static analysis model of internal excitation to make contact analysis

and the stiffness excitation

position of the tooth meshing

the relative speed of the driving gear and driven gear of the system are obtained

the numerical simulation of its meshing impact characteristic is carried out

the system engages impact excitation is got and harmonic excitation function is used to simulate system error.External excitation is the main consideration for the engine torque fluctuations and external vibrations

so that further analysis of the conditions fit the actual working conditions.