A study on strength evaluation procedure for the welded bogie frame of tilting railway vehicles

This paper has investigated the strength evaluation procedure of bogie frame for the tilting-train that is being developed by the Korea Railroad Research Institute. In this study, the loading conditions imposed on the tilting train were derived and the static and fatigue strength of the bogie frame were evaluated. In order to derive the dynamic loads according to the carbody tilting, the load redistribution effect by carbody tilting, the unbalanced lateral acceleration effect by high-speed curving and the tilting actuator force effect, were considered. Multi-body dynamic analyses were carried out to evaluate the tilting load cases, and strength analysis was performed by finite element analysis. From this study, the structural safety of the bogie frame could be ensured.