| 含孔隙富铝聚四氟乙烯/铝含能材料冲击温升规律 |
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| 引用本文： | 蔡尚晔,姜春兰,毛亮,王在成,胡榕,叶胜. 含孔隙富铝聚四氟乙烯/铝含能材料冲击温升规律[J]. 兵工学报, 2021, 42(2): 225-233. DOI: 10.3969/j.issn.1000-1093.2021.02.001 |
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| 作者姓名： | 蔡尚晔 姜春兰 毛亮 王在成 胡榕 叶胜 |
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| 作者单位： | 北京理工大学 爆炸科学与技术国家重点实验室,北京100081 |
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| 摘 要： | 为研究孔隙度对富铝含量聚四氟乙烯/铝(PTFE/Al)含能材料冲击温升效应的影响,采用考虑熔化效应的一维粘塑性孔洞塌缩模型,对该材料的冲击温升进行了理论分析.建立孔隙度分别为10％、20％、30％的富铝PTFE/Al细观离散化模型,并借助非线性动力有限元软件AUTO-DYN开展细观数值模拟,对冲击加载下含孔隙富铝PTF...
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| 关 键 词： | 含能材料 聚四氟乙烯/铝 孔隙度 细观模拟 冲击温升 |
Impact Temperature Rise Law of Porous Aluminum-rich PTFE/Al Energetic Material |
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| CAI Shangye,JIANG Chunlan,MAO Liang,WANG Zaicheng,HU Rong,YE Sheng. Impact Temperature Rise Law of Porous Aluminum-rich PTFE/Al Energetic Material[J]. Acta Armamentarii, 2021, 42(2): 225-233. DOI: 10.3969/j.issn.1000-1093.2021.02.001 |
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| Authors: | CAI Shangye JIANG Chunlan MAO Liang WANG Zaicheng HU Rong YE Sheng |
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| Affiliation: | (State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China) |
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| Abstract: | In order to obtain the influence of porosity on the temperature rise effect of aluminum-rich PTFE/Al energetic materials, an one-dimensional viscoplastic cavity collapse model considering the melting effect is used to theoretically analyze the impact temperature rise of the material. A micro-discrete model of aluminum-rich PTFE/Al with porosity of 10%, 20%, and 30% was established, and the numerical simulation was performed with the help of AUTODYN nonlinear dynamic finite element software to analyze the pore compression and temperature rise of porous aluminum-rich PTFE/Al energetic materials under impact loading. In addition, the numerically simulated result was validated through a split Hopkinson pressure bar (SHPB) experiment. The results show that the internal temperature of the material generally increases intermittently with the periodic loading of the incident bar; during the compression process, the temperature rise of porous aluminum-rich PTFE/Al energetic materials is mainly affected by the hole inner diameter velocity a· and the yield strength Y; compared with 20% and 30% porosity aluminum-rich PTFE/Al energetic materials, the 10% porosity aluminum-rich PTFE/Al energetic materials have the highest temperature rise during material compression. |
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| Keywords: | energeticstructuralmaterial PTFE/Al materialporosity mesoscalesimulation impacttemperaturerise |
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