Prediction of Rear axle Fatigue Life Based on Virtual Axle Test Rig

Abstract:

The paper presents an entire process to establish the virtual axle test rig system and the method to establish the mechanic system and hydraulic system. The control algorithm of the virtual test, frequency domain iteration learning control, is programmed. The load is realized through co simulation and a rear axle is chosen for virtual test. With the rear axle boundary conditions from the virtual test and the finite element method, the fatigue life and the damage of the rear axle are predicted. A comparative study of the results with those from the real test shows that they are in accordance with each other.

Key words:virtual test rig; iteration control algorithm; co simulation; fatigue life