A finite element model for train-dummy integrated passive safety simulation analysis was constructed based on the dummy model representing the male human characteristics of 50th percentile in China.The attitude changes of occupants during train collisions were analyzed,and the mechanical response characteristics of the head and neck of occupants were explored.The influence mechanism of seat alignment on occupants'head and neck injury response was also revealed,and an injury risk prediction model based on head and neck biomechanical injury parameters was developed.The results show that the collision between the occupant's face and the front seat may cause primary brain stem injury.The front and back curvature of the occupant's neck will lead to the greater stress in the lower neck cervical spine,and it will also lead to the greater stress in the intervertebral disc of upper and lower necks,respectively.The Nij tolerance limit specified in the current standard will significantly underestimate the neck injuries suffered by occupants in rear-end train collisions.
维普
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