Study on Behind Helmet Blunt Trauma Caused by High-Speed Bullet

Applied Bionics and Biomechanics
Zhihua CaiZhuangqing Fan

Abstract

The mechanism of Behind Helmet Blunt Trauma (BHBT) caused by a high-speed bullet is difficult to understand. At present, there is still a lack of corresponding parameters and test methods to evaluate this damage effectively. The purpose of the current study is therefore to investigate the response of the human skull and brain tissue under the loading of a bullet impacting a bullet-proof helmet, with the effects of impact direction, impact speed, and impactor structure being considered. A human brain finite element model which can accurately reconstruct the anatomical structures of the scalp, skull, brain tissue, etc., and can realistically reflect the biomechanical response of the brain under high impact speed was employed in this study. The responses of Back Face Deformation (BFD), brain displacement, skull stress, and dura mater pressure were extracted from simulations as the parameters reflecting BHBT risk, and the relationships between BHBT and bullet-proof equipment structure and performance were also investigated. The simulation results show that the frontal impact of the skull produces the largest amount of BFD, and when the impact directions are from the side, the skull stress is about twice higher than other directions...Continue Reading

References

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Dec 26, 2018·Computer Methods in Biomechanics and Biomedical Engineering·Zhihua CaiHaojie Mao

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Citations

Mar 4, 2021·Annals of Biomedical Engineering·Xingyuan HuangZhihua Cai

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Software Mentioned

PROE
HyperMesh
Simpleware
DYNA
LS
NRL

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