The gear in tracked vehicle gearbox is difficulty in accurately measuring the stress of gear meshing process and predicting life

and the finite element model is established to analyzing the gear meshing process which is the highly non-linear process

and the test is adopted to verify

then the life model is established to predicting the gear fatigue failure part and life by nCode designife software

and compared with the research results

it is verified that the dynamic method is feasible in analyzing gears meshing

it provided reference for predicting gear life.