Research on time interval of explosion impact on pelvis and lumbar spine injury

被引：0
|
作者：
Luo M. [1 ]
Zhou Y. [1 ]
Zhang J. [1 ]
Zhang M. [1 ]
Su Y. [1 ]
Sun X. [1 ]
机构：
[1] Nanjing University of Science and Technology, Nanjing
来源：
Baozha Yu Chongji/Explosion and Shock Waves | 2021年 / 41卷 / 01期
关键词：
Explosion shock; Mine-resistant seat; Passenger injury; Time interval;
D O I：
10.11883/bzycj-2020-0059
中图分类号：
学科分类号：
摘要：
In order to research the influence of the time interval between the vertical impact of the lower legs of passenger and seat on the pelvis and lumbar injuries under explosive impact environment, Hyperworks and LS-DYNA were used to model and simulation analysis, and the research was carried out in combination with the lower legs impact test and the seat drop test. The results show that the positive and negative peaks are generated by the pelvic acceleration, dynamic response index and the z-direction force of the lumbar spine when the passenger's lower legs and seat mounting points are impacted separately, but the positive and negative peaks do not weaken when the impact time interval is controlled. When the lower legs and seat mounting points are impacted at different time, injuries to the pelvis and lumbar spine of the passenger will be aggravated, and the damage degree of the lower legs impacted preferentially is more serious than that when the seat mounting points are impacted first. © 2021, Editorial Staff of EXPLOSION AND SHOCK WAVES. All right reserved.
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