Head injury mechanisms of the occupant under high-speed train rear-end collision
To improve the passive safety of high-speed trains, it is very important to understand the mechanism of head injury in high-speed train collisions. In this study, the head injury mechanisms of occupants in high-speed train rear-end collisions were investigated based on the occupant-seat coupling mod...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-09-01
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| Series: | Theoretical and Applied Mechanics Letters |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095034924000485 |
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| author | Zhenhao Yu Lin Jing |
| author_facet | Zhenhao Yu Lin Jing |
| author_sort | Zhenhao Yu |
| collection | DOAJ |
| description | To improve the passive safety of high-speed trains, it is very important to understand the mechanism of head injury in high-speed train collisions. In this study, the head injury mechanisms of occupants in high-speed train rear-end collisions were investigated based on the occupant-seat coupling model, which included a dummy representing the Chinese 50th percentile adult male. The typical injury responses in terms of skull fractures, brain contusions, and diffuse axonal injury (DAI) were analyzed. Meanwhile, the influences of collision speed and seat parameters on head injury response were examined. The simulation results indicate that the skull fractures primarily occur at the skull base region due to excessive neck extension, while the brain contusions and DAI result from the relative displacement of different brain regions. The increase in collision speed will promote the probability of skull fracture, brain contusion, and DAI. Seat design modifications, such as reduced seat spacing, increased seat backrest angles, and selecting the appropriate cushion angle (76°) and friction coefficient (0.15), can effectively mitigate probably occupant's head injury. |
| format | Article |
| id | doaj-art-0e65d64c58424391b832ff7f0181b34a |
| institution | Kabale University |
| issn | 2095-0349 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Theoretical and Applied Mechanics Letters |
| spelling | doaj-art-0e65d64c58424391b832ff7f0181b34a2024-12-17T04:59:29ZengElsevierTheoretical and Applied Mechanics Letters2095-03492024-09-01145100537Head injury mechanisms of the occupant under high-speed train rear-end collisionZhenhao Yu0Lin Jing1State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031, ChinaCorresponding author.; State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031, ChinaTo improve the passive safety of high-speed trains, it is very important to understand the mechanism of head injury in high-speed train collisions. In this study, the head injury mechanisms of occupants in high-speed train rear-end collisions were investigated based on the occupant-seat coupling model, which included a dummy representing the Chinese 50th percentile adult male. The typical injury responses in terms of skull fractures, brain contusions, and diffuse axonal injury (DAI) were analyzed. Meanwhile, the influences of collision speed and seat parameters on head injury response were examined. The simulation results indicate that the skull fractures primarily occur at the skull base region due to excessive neck extension, while the brain contusions and DAI result from the relative displacement of different brain regions. The increase in collision speed will promote the probability of skull fracture, brain contusion, and DAI. Seat design modifications, such as reduced seat spacing, increased seat backrest angles, and selecting the appropriate cushion angle (76°) and friction coefficient (0.15), can effectively mitigate probably occupant's head injury.http://www.sciencedirect.com/science/article/pii/S2095034924000485High-speed trainRear-end collisionOccupant head injurySeat design parameters |
| spellingShingle | Zhenhao Yu Lin Jing Head injury mechanisms of the occupant under high-speed train rear-end collision Theoretical and Applied Mechanics Letters High-speed train Rear-end collision Occupant head injury Seat design parameters |
| title | Head injury mechanisms of the occupant under high-speed train rear-end collision |
| title_full | Head injury mechanisms of the occupant under high-speed train rear-end collision |
| title_fullStr | Head injury mechanisms of the occupant under high-speed train rear-end collision |
| title_full_unstemmed | Head injury mechanisms of the occupant under high-speed train rear-end collision |
| title_short | Head injury mechanisms of the occupant under high-speed train rear-end collision |
| title_sort | head injury mechanisms of the occupant under high speed train rear end collision |
| topic | High-speed train Rear-end collision Occupant head injury Seat design parameters |
| url | http://www.sciencedirect.com/science/article/pii/S2095034924000485 |
| work_keys_str_mv | AT zhenhaoyu headinjurymechanismsoftheoccupantunderhighspeedtrainrearendcollision AT linjing headinjurymechanismsoftheoccupantunderhighspeedtrainrearendcollision |