In this study, an axle shaft subjected to static deformation and fatigue damage was consider by computer aided engineering. This shaft system was modeled with CATIA and subjected to dynamic fatigue analyzes with Ansys workbench. The damaged fracture surfaces of the shaft have also been examined. Thus, the fatigue damage was clearly revealed in detail.For the present system, a design with a minimum cost, short production process, minimum weight was aimed together with the methodical construction principles. By means of CATIA and ANSYS, the product development design with reasonable tension and deformation values was formed for endless fatigue life. Design was produced in a short time with the help of 2D CATIA drawings and field tests were carried out. The design was used 560.000 cycles and damage did not occur.
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