열차 대차 프레임의 RTM 성형 공정 해석

초록

General material of train bogie frame is steel. However, application of composite material can reduce its weight by 25%~50%. Major disadvantages of composite structure are manufacturing process time and cost, and they have been overcome by the developing manufacturing process. Among them, RTM(Resin Transfer Molding) process shows relative merits for mass production because it demands low pressure and temperature during process. RTM process controls voids in material and processing time by adjusting the locations of gate and vent. These characteristics quals quality of structure. In this study, for manufacturing train bogie frame, RTM process is numerically analyzed depending on the locations of gate and vent.