3차원 유한요소법을 이용한 일반철도차량의 충돌안전도 연구

초록

In order to design safety trains, it is important to predict the collision characteristic of trains. There are three FEM models to predict the behavior of trains at various collision accidents. In this study FEM models are composed of meshed cars and concentrated masses that represent unmeshed cars and bogies. All cars are coupled by coupler and collide against rigid wall as three collision scenarios. As the result of this study, exceptional behaviors like as overriding between cars, collapse of driver's protection area, intrusion of front car into passenger area of relative car and buckling were partly observed. This study is conducted by using LS-DYNA 970 in super computing center in KISTI(Korea Institute of Science and Technology Information) to estimate the crashworthiness of conventional train.