DURABILITY EVALUATION OF THE COMPOSITE BOGIE FRAME UNDER DIFFERENT SHAPES AND LOADING CONDITIONS

초록

In order to replace a conventional steel bogie to a composite one, in this study, the glass/epoxy composite bogie frames with two different shapes have been designed to be applied to the bogie of urban subway trains. The durability of the composite bogie frames was evaluated using a Goodman diagram and finite element analysis under different loading conditions. In order to obtain the fatigue limit of the glass/epoxy used to the bogie frame, the fatigue test using specimens under stress ratio of R