估计船载水下爆炸造成的脑损伤风险,使用高保真性有限元头模型
Sushan Nakarmi1, Yaohui Wang1, Alice Lux Fawzi2
1Department of Engineering, Robert Morris University, Moon Township, PA 15108, USA.
Military medicine
|June 15, 2024
概括
水下爆炸对船员造成创伤性脑损伤 (TBI) 的风险. 组织层面的损伤指标,如应变,比传统的头部加速更准确地评估TBI风险,甚至在加速值以下也能揭示潜在的脑震荡损伤.
科学领域:
- 生物力学 生物力学
- 计算建模计算建模
- 神经创伤是一种神经创伤.
背景情况:
- 评估船员在水下爆炸时的生存能力和受伤情况对于船舶的作战能力至关重要.
- 创伤性脑损伤 (TBI) 是一个重大问题,传统上使用头部加速指标进行评估.
- 组织水平的生物力学反应可能比单独的头部加速更准确地了解TBI风险.
研究的目的:
- 用基于组织的损伤指标评估水下爆炸造成的TBI风险.
- 为了比较组织水平的指标 (应变,应变速率,内压力) 与传统的头部加速指标.
主要方法:
- 使用详细的有限元 (FE) 头模型进行计算模拟.
- 从浮动冲击平台 (FSP) 用人类形状测试装置 (ATD) 的测试中得出的负载条件.
- 评估ATD位置,方向和爆炸距离 (20-50英尺) 对脑损伤风险的影响.
主要成果:
- 头部加速和TBI风险取决于ATD定位和爆炸对峙距离.
- 隔壁位置的ATD显示了最高的组织应变 (19%) 和应变率 (25秒-1).
- 虽然头部加速标准没有超过,但预测的组织菌株表明潜在的脑震荡损伤风险.
结论:
- 解剖学详细的FE头部模型可以准确评估水下爆炸造成的TBI风险.
- 组织层面的指标为超越头部加速的伤害机制提供了宝贵的见解.
- 准确的创伤风险评估对于制定减轻战略以保护军舰船员至关重要.
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