무현가 대차용 축상 장치 구조 건전성 평가 연구

초록

In this study, we describe the evaluation of the fatigue life and strength of an axle-box which is including the glass fiber/epoxy 4-harness satin-woven composites. To obtain the S-N curve for the evaluation of the fatigue characteristics of the axle-box plate and axle-box seat, we consider 6 load cases such as static, dynamic, torsion, front, rear, right, left, and brake. The preload of the bolt is calculated by the regulation torque or proof strength. Because the regulation torque makes the high stress of the bolt, the amplitude of the stress becomes small. The fatigue strength of the composite bogie frame was evaluated by a Goodman diagram according to JIS E 4207. The results show that the fatigue life and strength of the lightweight composite bogie satisfy the requirements of JIS E 4207. And it is validated with the vertical load test.