High-speed train may collide with many obstacles, which can cause serious occupant injury. This study aims to investigate the dynamic characteristic of occupant during the frontal collision between high-speed train and obstacle. The finite element method was used to establish the collision model between the head vehicle of the train and obstacle. The frontal collision simulation tests under three collision conditions were established. The dynamic characteristics of occupants under different collision speeds and collision angles were explored. According to the above research, the influences of collision angle and speed on occupant injuries were systematically studied, and the risk boundaries for Railway Group Standard GMRT2100: Rail Vehicle Structures and Passive Safety (GM/RT2100) and Abbreviated injury scale ≥ 3 (AIS 3 + ) injury risk ≤ 5 % were finally proposed. The results show that the occupant injuries increased with the increase of collision speed, and most of the injury values at the collision angle of 20° were the minimum. The risk boundary for AIS 3 + injury risk ≤ 5 % was higher than that for GM/RT2100. The findings in this study are helpful to understand the occupant injury mechanism during the frontal collision between high-speed train and obstacle.

中文翻译：

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高速列车与障碍物正面碰撞时乘员动态特性研究

高速列车可能会与许多障碍物发生碰撞，从而导致乘员严重受伤。本研究旨在研究高速列车与障碍物正面碰撞时乘员的动态特性。采用有限元方法建立了列车头车与障碍物的碰撞模型。建立了三种碰撞工况下的正面碰撞模拟试验。探讨不同碰撞速度和碰撞角度下乘员的动态特性。根据上述研究，系统研究了碰撞角度和速度对乘员伤害的影响，并确定了铁路团体标准GMRT2100：轨道车辆结构和被动安全性（GM/RT2100）和简略伤害量表≥3（AIS 3）的风险边界。 + ) 最终提出伤害风险≤ 5 %。结果表明，乘员伤害随着碰撞速度的增加而增加，且大多数碰撞角度为20°时伤害值最小。AIS 3 + 伤害风险≤ 5% 的风险边界高于 GM/RT2100。本研究的结果有助于理解高速列车与障碍物正面碰撞时乘员的伤害机制。