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首页> 外文期刊>Annals of Biomedical Engineering: The Journal of the Biomedical Engineering Society >Multi-Scale Modeling of Head Kinematics and Brain Tissue Response to Blast Exposure
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Multi-Scale Modeling of Head Kinematics and Brain Tissue Response to Blast Exposure

机译：头动脉的多尺度建模与脑组织应对爆发暴露

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摘要

Injuries resulting from blast exposure have been increasingly prevalent in recent conflicts, with a particular focus on the risk of head injury. In the current study, a multibody model (GEBOD) was used to investigate the gross kinematics resulting from blast exposure, including longer duration events such as the fall and ground impact. Additionally, detailed planar head models, in the sagittal and transverse planes, were used to model the primary blast wave interaction with the head, and resulting tissue response. For severe blast load cases (scaled distance less than 2), the translational head accelerations during primary blast were found to increase as the height-of-burst (HOB) was lowered, while the HOB was found to have no effect for cases with scaled distance greater than 2. The HOB was found to affect both the magnitude and direction of rotational accelerations, with increasing magnitudes as the HOB deviated from the height of the head. The choice of ground contact stiffness was found to greatly affect the predicted head accelerations during ground impact. For a medium soil ground material, the kinematics during ground impact were greater for scaled distances exceeding 1.5, below which the primary blast produced greater kinematic head response.
机译：爆炸暴露导致的伤害在近期冲突中越来越普遍，特别关注头部伤害的风险。在目前的研究中，使用多体模型（Gebod）来研究由爆炸暴露产生的总运动学，包括较长的持续时间事件，如下降和地面冲击。另外，在矢状和横向平面中使用详细的平面头模型来模拟与头部的主要高频波相互作用，并导致组织反应。对于严重的爆炸载荷案例（缩小距离小于2），发现原发性爆炸过程中的平移头加速度随着爆破高度（滚刀）降低而增加，而滚刀对于缩放的情况无效距离大于2.滚刀的速度影响旋转加速度的幅度和方向，随着从头部高度偏离的滚刀而增加的幅度。发现接地接触刚度的选择大大影响了地面冲击期间预测的头部加速度。对于中等土壤研磨材料，在接地冲击期间的运动学对于超过1.5的缩放距离较大，下面主要爆炸产生更大的运动头响应。

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