Finite element analysis on mechanical responses of human torso with body armor to non penetrating ballistic impact
- VernacularTitle:利用有限元研究非贯穿弹道冲击防弹衣后人体躯干的力学响应
- Author:
Ping DONG
1
;
Jing CHEN
2
;
Qi-kuan ZHANG
1
;
Jian-yi KANG
2
;
Hai LIU
2
;
Liang-chao ZHANG
2
;
Cheng XU
1
Author Information
1. School of Mechanical Engineering, Nanjing University of Science and Technology
2. State Key Laboratory of Trauma, Burns, and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University
- Publication Type:Journal Article
- Keywords:
Ballistic impact;
Body armor;
Human torso;
Biomechanical response;
Finite element analysis
- From:
Journal of Medical Biomechanics
2012;27(3):E270-E275
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo develop a finite element computational model of the torso for the numerical simulation of mechanical responses of human torso to non-penetrating ballistic impact. MethodsBased on the CT data of a Chinese adult man, the finite element model of human torso was created by using the medical image processing software Mimics and the finite element pre-processing software HyperMesh. The pressure and acceleration response of the human torso outfitted with soft body armor to the ballistic impact from 9 mm ammunition at a velocity of 360 m/s was calculated numerically by the explicit finite element code LS-DYNA. ResultsThe finite element model of human torso including thoracic skeletal structure, organs, mediastinum and muscle/skin was established. The pressure response of heart, lung, liver and stomach, as well as the acceleration response of sternum were obtained by numerical calculation. It was found that the peak pressure and its time phase were dependent on the distance between the impact point and the measured point wherever in various organs or different position of an organ. Conclusions The finite element computational model of human torso outfitted with soft body armor is available for the simulation of human response to non-penetrating ballistic impact, and the simulated response can be used as evidence for the investigation on mechanism and protection of behind armor blunt frauma.
