정면충돌사고 시 수직좌굴현상의 발생원인과 시뮬레이션 방법에 대한 연구

초록

In this paper, the cause of vertical buckling have been analyzed numerically during a headon collision and the effect of heavy driving devices and suspension system also was investigated. To do this, the model was created as finite elements. The reference train is a korean high speed train, its first three cars were made in three-dimensional, and the rest of 17 cars were created in 1-dimensional. To examine the reason of vertical buckling behavior, two case of studies were implemented. The one is to evaluate the model without considering suspension's dynamic characteristic, and another is to simulate it with considering them. Then the result of the two case was compared. In the result, this study shows wether considering the dynamic elements or not can have an effect on the energy capacity, vertical buckling, and gross motion. Therefore, if a complete train is assessed on crashworthiness, the characteristics of dynamic components should be reflected in detail.