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350㎞/h 급의 유지보수용 주행시험기의 개념설계 및 동적모델 제시 연구
구준성(Goo Jun-Sung),신광복(Shin Kwang-Bok),류봉조(Ryu Bong-Jo),이대봉(Lee Dae-Bong),이은규(Lee Eun-Gyu) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
Roller rigs have been built widely to study and evaluate the dynamic behaviors of railway vehicles, and they have particularly been applied to the development and routine maintenance of high-speed trains. However, there is no roller rig for routine maintenances of high speed train in Korea, although high speed train is running on the lines. Therefore, it is very important issue to check and evaluate the dynamic responses of high speed train after several years of operation. This paper presents a study on the conceptual design and dynamic model to develop the roller rig for the routine maintenances of high speed trains. The roller rig has two independent electronic motor and maximum speed of 350㎞/h, which can simulate running on straight and curved track. CATIA V5 was used to design the 3D geometrical models and ADAMS was used to verify and analyze the dynamic behaviors of roller rig.
도상자갈 비산에 의한 경량 대차프레임 적용 적층 복합재의 저속충격 손상 및 충격 후 압축 강도 평가
구준성(Jun-Sung Goo),신광복(Kwang-Bok Shin),김정석(Jung-Seok Kim) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
In order to evaluate the structural integrity of a GFRP composite bogie frame due to flying railway ballast the low velocity impact test and compressive test after impact was conducted for glass fiber/epoxy 4-harness satin woven laminate composites applied to skin part of a bogie frame. The impact test was performed using a instrumented impact testing system with energy levels of 5J 10J and 20J and the designed impactor based on typical railway ballast shapes such as sphere cube and cone to simulate the ballasted track environments. The compressive strength was tested to according to ASTM D7137 to evaluate the degradation of mechanical property of impact damaged laminate composites. The results showed that the damage area and the degradation of compressive strength after impact for laminate composites was increased with increase in impact energy for all ballast shapes and was particularly most influenced by cone ballast shape.