Lumbar and neck injuries of occupants in different reclining postures.
Autor: | Liu DY; School of Mechanical Engineering, Hebei University of Technology, Tianjin, 300131, China; CATARC (Tianjin), Automotive Engineering Research Institute Co., Ltd., Tianjin, 300399, China., Xiao S; School of Mechanical Engineering, Hebei University of Technology, Tianjin, 300131, China. Electronic address: xiaosen@hebut.edu.cn., Han FF; CATARC (Tianjin), Automotive Engineering Research Institute Co., Ltd., Tianjin, 300399, China., Hu BT; CATARC (Tianjin), Automotive Engineering Research Institute Co., Ltd., Tianjin, 300399, China. |
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Jazyk: | angličtina |
Zdroj: | Chinese journal of traumatology = Zhonghua chuang shang za zhi [Chin J Traumatol] 2024 Jul; Vol. 27 (4), pp. 211-217. Date of Electronic Publication: 2024 Feb 23. |
DOI: | 10.1016/j.cjtee.2024.02.005 |
Abstrakt: | Purpose: With the increasing level of automation in automobiles, the advent of autonomous vehicles has reduced the tendency of drivers and passengers to focus on the task of driving. The increasing automation in automobiles reduced the drivers' and passengers' focus on driving, which allowed occupants to choose a more relaxed and comfortable sitting position. Meanwhile, the occupant's sitting position went from a frontal, upright position to a more relaxed and reclined one, which resulted in the existing restraint systems cannot to keep occupants safe and secure. This study aimed to determine the effects of different reclining states on occupants' lumbar and neck injuries. Methods: This is an original research on the field of automotive safety engineering. Occupants in different initial sitting positions (25°, 35°, 45°, and 55°) were adapted to changes in seat back angle and restraint systems and placed in the same frontal impact environment. Neck injury indexes, lumbar axial compression force and acceleration, as well as occupant dynamic response during the impact, were compared in different sitting positions. The injury response and kinematic characteristics of occupants in different reclining positions were analyzed by the control variable method. Results: As the sitting angle increased, the occupant's head acceleration decreased, and the forward-lean angle decreased. Occupants in the standard sitting position had the greatest neck injury, with an N Conclusion: The study of occupant lumbar and neck injuries based on different recline states can provide a theoretical basis for optimizing lumbar evaluation indexes, which is conducive to the understanding of the lumbar injury mechanism and the comprehensive consideration of occupant safety protection. (Copyright © 2024 Chinese Medical Association. Production and hosting by Elsevier B.V. All rights reserved.) |
Databáze: | MEDLINE |
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