Fatigue Life Prediction of Front Axle of Truck at Different Crack Directions Using ANSYS

The front axle is an important part of vehicle suspension system. The front axle of materials AISI 1045, AISI 1053, and Structural steel is analyzed with the help of ANSYS. The AISI 1045 material exhibits comparatively greater von-misses stress and deformation. The critical area of axle is determined, which provides a failure-prone zone and a basis to introduce a crack at this region for study. The critical zone of the axle is found under the plate spring sheet. The failure often propagates due to the developed crack in axle and the direction of appearance of crack may be different in different conditions. The fatigue life of axle is determined for different crack angles. The fatigue life of front axle is decreasing with increase in crack angle. The vertical crack direction is found more dangerous direction in front axle.