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Blast Quantification Using Hopkinson Pressure Bars
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对非金属环状保护结构的防爆性能进行数值调查
Xiaobing Bian1, Lei Yang1, Tao Wang1
1State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China.
Materials (Basel, Switzerland)
|December 23, 2023
概括
使用聚乙烯 (PE) 纤维的非金属环形保护结构提供轻量级的防爆保护. 添加聚氨泡可以通过减少PE纤维层的压力来显著增强保护.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 防务技术 防务技术 技术
背景情况:
- 防爆冲击波保护对于军事和公共安全至关重要.
- 非金属结构提供轻量优势和减少二次损伤.
- 聚乙烯 (PE) 纤维的连续绕在保护性应用中得到了探索.
研究的目的:
- 研究非金属环状保护结构在内部爆破下的动态机械反应.
- 分析电荷重量,PE纤维层和聚氨泡对结构完整性的影响.
- 为非金属爆炸防护的数值模拟提供见解.
主要方法:
- 使用数值模拟来建模爆炸反应.
- 该研究对各种参数进行了研究,包括爆炸性电荷,PE纤维层数量和聚氨泡厚度.
- 分析了动态机械反应和对结构的损伤.
主要成果:
- 120层PE纤维证明了对50克TNT相当的爆炸物的保护.
- 仅增加PE纤维层显示保护效率的回报正在下降.
- 加入30毫米聚氨泡层可以将PE纤维的等效应力降低41.6%.
结论:
- 聚氨泡有效地减轻了PE纤维层的压力,增强了对爆炸的保护.
- 优化材料组成,而不仅仅是厚度,是高效非金属保护结构的关键.
- 这些发现为设计和模拟先进的爆炸防护系统提供了有价值的数据.
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