Evaluation of Design Loads Using Motion Modes of Bogie Frames

Abstract

The strength design of the bogie frames is based on JIS-E4207, and the load conditions in this standard are defined to reflect the various loads that are applied to bogie frames while the vehicle is running. However, it is not easy to determine the design load based on the stress generated by the dynamic behavior during running, and the design load is determined based on past experience and performance, but the theoretical basis is not clear. In this study, the final objective is to determine the design load taking into account the service stress of the bogie frame, and the relationship between the stress obtained by decomposing the service stress into each representative motion mode and the design load is clarified.