Abstract
Taking vehicle system, track system, tunnel structure and aerodynamic effort into consideration, an approach based upon the Arbitrary Lagrangian-Eulerian (ALE) scheme is presented to study the impact of aerodynamic effect on train dynamic performance in tunnels, and then analysis of lateral vibration of the train due to the loadings and irregularities is presented. The present results show that the lateral vibration of the tail car is more sensitive to aerodynamic effort than the middle car's; compared with other vibrations modes of car body, the yawing vibration of car body is more prominent. Aerodynamic effect has a greater influence on the safety performance of tail car with reference to the criteria of the derailment coefficient and reduction ratio of wheel-load.
