충돌안전성능 시험용 열차전두부 모델개발

초록

The purpose of this study is to develop advanced crash energy absorption mechanism of train head. The characteristics of head structure developed in this paper only has tubes to absorb crash energy and driver's zone can be moved backward to protect driver. To implement this study, first we established energy absorbing strategy and then mechanism of concept head structure was sketched. The mechanism of the head absorbs more energy than exist in head zone and protects drivers as well as passengers. Second, topology optimization was done to decide the location of beams. third, detailed geometry was modeled by CATIA and finite element model for LS-DYNA input was created by HyperMesh. At the end, the model was simulated to evaluate energy absorption mechanism. In the result, numerical simulation shows that concept head structure works well following intended energy absorption strategy. In the near future, the real test will be done and the result will be compared with simulation result to validate the mechanism.