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Finite element simulations of the head–brain responses to the top impacts of a construction helmet: Effects of the neck and body mass

机译：头戴式头盔对建筑头盔最大撞击的响应的有限元模拟：颈部和体重的影响

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摘要

Traumatic brain injuries are among the most common severely disabling injuries in the United States. Construction helmets are considered essential personal protective equipment for reducing traumatic brain injury risks at work sites. In this study, we proposed a practical finite element modeling approach that would be suitable for engineers to optimize construction helmet design. The finite element model includes all essential anatomical structures of a human head (i.e. skin, scalp, skull, cerebrospinal fluid, brain, medulla, spinal cord, cervical vertebrae, and discs) and all major engineering components of a construction helmet (i.e. shell and suspension system). The head finite element model has been calibrated using the experimental data in the literature. It is technically difficult to precisely account for the effects of the neck and body mass on the dynamic responses, because the finite element model does not include the entire human body. An approximation approach has been developed to account for the effects of the neck and body mass on the dynamic responses of the head–brain. Using the proposed model, we have calculated the responses of the head–brain during a top impact when wearing a construction helmet. The proposed modeling approach would provide a tool to improve the helmet design on a biomechanical basis.
机译：脑外伤是美国最常见的严重致残伤。施工头盔被认为是减少工作场所脑部受伤风险的必不可少的个人防护设备。在这项研究中，我们提出了一种实用的有限元建模方法，该方法适合工程师优化施工头盔设计。有限元模型包括人头的所有基本解剖结构（即皮肤，头皮，头骨，脑脊液，大脑，髓质，脊髓，颈椎和椎间盘）以及施工头盔的所有主要工程组件（即壳和悬挂系统）。头部有限元模型已经使用文献中的实验数据进行了校准。由于有限元模型不包括整个人体，因此很难精确地考虑脖子和体重对动态响应的影响。已经开发出一种近似方法来说明脖子和体重对头脑动态响应的影响。使用所提出的模型，我们计算出了在戴上施工头盔时最大的撞击时脑部的反应。拟议的建模方法将提供一种在生物力学基础上改进头盔设计的工具。

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