Akademik Veri Yönetim Sistemi
3th International Mediterranean Congress, Mersin, Türkiye, 17 - 18 Nisan 2023, ss.568-581
Front axles are critical parts for vehicles in carrying the total load on the vehicle. These parts can be fixed to the wheels, rotate with them, or fixed around the wheels so that they rotate around the axle. Axles have an important function in vehicle dynamics in transmitting the driving torque to the wheels and maintaining the position of the wheels relative to each other and the vehicle body. At this point, it is essential that the axles to be designed have a structure that can withstand high forces and can withstand for a long time. In this study, it is aimed to find optimum fatigue life on the front axle by using AISI 4340 and IS 2062 materials. In front axle design, modeling was done using the CATIA program and then fatigue life analysis of the front axle beam was performed using the ANSYS workbench. How the front axle fatigue life can be improved by using two different materials is given in the results. Static analysis results showed that when the AISI 4340 material was evaluated for the basic case and the IS 2062 material for 5 different cases, the least deformation was obtained with 0.81 mm in the axle design using IS 2062 material with case 5. When the equivalent stresses are compared, the axle design using IS 2062 material in the 5th case has the lowest stress value with 184.97 MPa. These values are 1.37 times lower in terms of deformation and 2.9 times lower in terms of equivalent stresses compared to the design using AISI 4340 material in the basic case. As a result of the fatigue analysis, the axle design in case 5 using IS 2062 material has 11004 cycles, while the axle design with AISI 4340 material in the basic case has 9404 cycles. In this case, it is predicted from the results of the analysis that the IS 2062 material can have 1.17 times more cycle numbers in use. In the comparison made in terms of safety factor, the AISI 4340 material design reached 1.32, while the IS 2062 material design and 1.29 safety factor values were close to each other. When the necessary optimizations are made on the design in both static and fatigue analysis comparisons of two different materials used in the axle design, it is seen that the analysis results of the ultra-high strength steel AISI 4340 material can be achieved by making improvements with the IS 2062 material.