TY - JOUR
T1 - 含孔隙富铝聚四氟乙烯/铝含能材料冲击温升规律
AU - Cai, Shangye
AU - Jiang, Chunlan
AU - Mao, Liang
AU - Wang, Zaicheng
AU - Hu, Rong
AU - Ye, Sheng
N1 - Publisher Copyright:
© 2021, Editorial Board of Acta Armamentarii. All right reserved.
PY - 2021/2
Y1 - 2021/2
N2 - 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 ȧ 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.
AB - 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 ȧ 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.
KW - Energetic structural material
KW - Impact temperature rise
KW - Material porosity
KW - Mesoscale simulation
KW - PTFE/Al
UR - http://www.scopus.com/inward/record.url?scp=85104308191&partnerID=8YFLogxK
U2 - 10.3969/j.issn.1000-1093.2021.02.001
DO - 10.3969/j.issn.1000-1093.2021.02.001
M3 - 文章
AN - SCOPUS:85104308191
SN - 1000-1093
VL - 42
SP - 225
EP - 233
JO - Binggong Xuebao/Acta Armamentarii
JF - Binggong Xuebao/Acta Armamentarii
IS - 2
ER -