승차감 향상을 위한 K-AGT 대차의 동적 특성 평가

초록

K-AGT Bogie is a rail car with rubber wheels while common rail Bogie has a iron wheel, and side guide type. so K-AGT has more contact between side guide rail and guide wheel than common rail. It is generated by vibration and friction through the contact. In this study, we make the improvement guide of two types (Spring and Rubber Type) and test. Test was performed with 3 Types of Original, Spring and rubber type and at a speed of 5 steps (30km, 50km, 60km, 70km, 80km ). Sensor was attached to the guide, front part and rear part. In the result, RMS. value was reduced about 12% and natural frequency of car body about 20Hz did.