摘要
为探究碳纤维复合材料编织板的爆炸分离方法,通过C型聚能装药结构、线性聚能切割器2种切断方法进行试验探究,并利用AUTODYN软件进行数值模拟,分析切口处粒子飞散速度,结合Tsai-Wu张量强度准则分析复合板断裂程度。试验结果表明:C型聚能装药结构和线性聚能切割器均能成功切断复合板,C型聚能装药结构由一次强激波压缩切断复合板,切口较为平整;线性聚能切割器由于未设炸高,在未充分形成的射流和拉伸波的作用下,导致切口有较大损伤,没有C型聚能装药结构切口平整。模拟结果表明复合板在分离过程中经历了4个阶段,切口粒子形成2次峰值速度;由Tsai-Wu张量计算出复合板断裂完全,各个监测点的F值都比恰好断裂的时的F值大2~8倍左右,试验药量较大,应适当减少药量,为今后的优化试验奠定了基础。
In order to explore the explosive separation method of carbon fiber composite braided plate,2 cutting methods of C-shaped shaped charge structure and linear shaped charge cutter were used for experimental research.The AUTODYN software was used for numerical simulation to analyze the particle scattering velocity at the cutting,and the fracture degree of the composite plate was analyzed combined with the Tsai-Wu tensor strength criterion.The experimental results show that both the C-shaped shaped charge structure and the linear shaped charge cutter can cut the composite plate successfully.The C-shaped shaped charge structure is compressed by a strong shock wave to cut the composite plate,and the cutting is relatively flat.Because the linear shaped charge cutter has no explosion height,under the action of the insufficiently formed jet and tensile wave,the cutting is greatly damaged,and the cutting is not smooth without the C-shaped shaped charge structure.The simulation results show that the composite plate goes through 4 stages in the separation process,and the cutting particles form 2 peak velocities.It is calculated from the Tsai-Wu tensor that the composite plate is completely broken,and the F value of each monitoring point is about 2-8 times larger than the F value when it is just broken,indicating that the test charge is large and should be appropriately reduced,which lays the foundation for future optimization experiments.
作者
胡坤伦
薛克军
何志杰
赵康
夏治园
宋凡平
韩体飞
HU Kun-lun;XUE Ke-jun;HE Zhi-jie;ZHAO Kang;XIA Zhi-yuan;SONG Fan-ping;HAN Ti-fei(School of Chemical Engineering,Anhui University of Science and Technology,Huainan 232001,Anhui,China)
出处
《工程爆破》
CSCD
北大核心
2022年第4期1-6,24,共7页
Engineering Blasting
基金
国家自然科学基金青年科学基金资助项目(51604009)。
关键词
爆炸分离
碳纤维复合材料
数值模拟
线性聚能切割器
explosive separation
carbon fiber composite material
numerical simulation
linear shaped charge cutter
