Dynamic simulation of train driver under secondary impact

Hechao Zhou,Jun Zhan,Jimin Zhang,Wenbin Wang

doi:10.1177/1687814017743111

Abstract

In this paper, a passenger train with detailed cabin structural has been established based on the finite element method. Simulation results indicate that the train driver injury by the triangular impact pulse in US 49CFR is more seriously than those by the collision scenarios in EN15227. Besides that the driver seat position has a significant effect on the driver injury severity during a secondary impact. It is found that generally the head injury criterion (HIC15) is proportional with the longitudinal and vertical distance between the driver seat and control desk. And the leg injury criterion (TI) is inversely proportional with the longitudinal distance and proportional with the vertical distance. In terms of the chest injury criterion (V*C), it is more complicated, and its minimal value is about at the position of 0.43 m (longitudinal) and 0.15 m (vertical). Moreover, simulation results indicate that the train driver with arms lying on the control desk has a less injury severity than that with the arms dropping naturally, and equipping with the three-point belt is of significant benefit for the train driver to reduce the secondary impact against the control desk during a train collision accident.

Highlights

With the continuous increase in train speed, railway vehicles are nowadays fast, convenient and smart
A passenger train with detailed cab structure has been established based on the finite element method
The main conclusions are summarised as follows: 1. According to the comparison of the injury criteria by different collision scenarios, the train driver suffers the most serious injury by the triangular impact pulse defined in the standard US CFR49

Summary

Introduction

With the continuous increase in train speed, railway vehicles are nowadays fast, convenient and smart. The effect of some key factors, such as the driver sitting postures, driver seat position and equipping with threepoint belt, have not been fully analysed Due to this reason, in this article, the driver injuries subjected to the common collision scenarios are first analysed and compared.

Leg injury criteria Tibial index

Conclusion