Fatigue Life Prediction of the Gear Box in Tracked Vehicles Based on Running Simulation Tests

The static strength theory became the basis for the design of the gear box in tracked vehicles. The dynamic characteristics of the gear box under different working conditions cannot be evaluated accurately, the reliability and fatigue life are difficult to study due to the limit dons of conventional tests and experimental techniques, the service life of the gear box was much shorter than the design one, thus the reliability of tracked vehicles was also affected deeply. The dynamic load of each part of the gear box under different working conditions was evaluated by setting up an MSC.ADAMS test program. The actual load applied to the fatigue life prediction system of the gear box provides the fatigue lives of box-related parts. The fatigue life prediction method of the gear box was verified as to its feasibility with running simulation tests.