In this study, the fatigue strength of the weld seams on the Y25 type bogie frame, commonly used in freight wagons, was investigated comprehensively using the finite element method (FEM). The loads applied to the bogie frame were determined according to the EN 13749 standard, which is valid in the railway industry. The fatigue strengths of the weld seams were evaluated according to the DVS 1612 standard, which is valid in the railway industry, and these values were interpreted according to the EN 15085-3 standard. A detailed finite element model of the model was created in ANSYS Workbench, and the amounts and locations of the fatigue loads specified in the EN 13749 standard were applied to the bogie frame. Stress-strain calculations were performed on the frame model under these conditions. The calculated stresses on the body were transferred, together with the CAD model, to the Limit-CAE finite element program. For consistency of stresses, the same finite element mesh was used in both finite element programs for bogie body. The fatigue strengths in the weld seams were calculated in the Limit-CAE finite element program. The evaluation and interpretation of the stress factors obtained in the weld seams according to the stress categories were carried out in accordance with the EN 15085-3 standard. It was observed that the weld seams defined on the bogie web met the structural requirements. In the study, important findings regarding the safety and strength performance of the weld seams on the body are presented.
Çam et al. (Mon,) studied this question.