Study on craniocerebral dynamics response and helmet protective performance under the blast waves

被引:146
作者
Huang, Xingyuan [1 ]
Chang, Lijun [1 ]
Zhao, Hui [2 ]
Cai, Zhihua [1 ]
机构
[1] Hunan Univ Sci & Technol, Hunan Prov Key Lab Hlth Maintenance Mech Equipmen, Xiangtan, Peoples R China
[2] PLA Army Characterist Med Ctr, Inst Traff Med, Chongqing, Peoples R China
关键词
Blast wave; Finite element model; Craniocerebral dynamics response; Helmet protection performance; TRAUMATIC BRAIN-INJURY; HUMAN HEAD; BALLISTIC IMPACT; SYSTEMS;
D O I
10.1016/j.matdes.2022.111408
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Blast traumatic brain injury (BTBI) is the major type of injury, existing helmets are mainly designed to resist bullets and fragments, so it is necessary to study the explosion- proof performance of helmets. In this study, the validated finite element models including head, Advanced Combat Helmet (ACH), fully-covered helmet based on the prototype of Iron Man helmet were used to establish the blast wave-helmet-head fluid-solid coupling model, dynamic responses such as blast wave flow field pressure, skull stress, brain tissue pressure, displacement and energy absorption were obtained through simulations. Quantitatively analyzed the protective performance of helmets show that wearing ACH can't reduce the severity of brain injury, but rather increased about 5% compared to without wearing helmet. Wearing fully-covered helmet with same thickness as ACH can reduces the degree of brain injury by about 5%. Fully-covered helmet with same weight as ACH provides better protection, which can reduce the degree of brain injury to 65% than without wearing helmet. Research show that optimizing the shape and thickness of helmet can greatly reduce the brain injury, lighter fully-covered helmet can provide better protection for the brain under blast wave environment. The results can provide reference for new design of helmets. (c) 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
引用
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页数:10
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