| V型夹层炸药对射流干扰的数值模拟 |
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| 引用本文： | 毛东方,李向东,宋柳丽.V型夹层炸药对射流干扰的数值模拟[J].爆炸与冲击,2008,28(1):86-91. |
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| 作者姓名： | 毛东方 李向东 宋柳丽 |
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| 作者单位： | 南京理工大学机械工程学院,江苏,南京,210094;南京理工大学机械工程学院,江苏,南京,210094;南京理工大学机械工程学院,江苏,南京,210094 |
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| 摘 要： | 采用三维有限元程序(LS-DYNA)模拟了射流侵彻放有V型夹层炸药靶板的过程，并与无V型夹层炸药等情况进行了对比。V型夹层炸药爆炸后，运动的两组面板和背板对射流有严重的干扰和切割效应，导致射流偏转、弯曲、着靶点分散，使射流的侵彻深度下降约30%～90%，V型夹层炸药结构干扰程度随入射角度的增大而呈递增趋势。V型角的变化对射流的侵彻深度干扰作用不明显。
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| 关 键 词： | 爆炸力学 切割效应 数值模拟 V型夹层炸药 射流 |
| 文章编号： | 1001-1455(2008)01-0086-06 |
| 修稿时间： | 2006年9月6日 |
Numerical simulation of disturbance by sandwich explosive on jet |
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| MAO Dong-fang,LI Xiang-dong,SONG Liu-li.Numerical simulation of disturbance by sandwich explosive on jet[J].Explosion and Shock Waves,2008,28(1):86-91. |
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| Authors: | MAO Dong-fang LI Xiang-dong SONG Liu-li |
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| Institution: | 1.School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China |
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| Abstract: | The processes for the jet penetrating at different impact angles into a semi-infinite target with V-shaped sandwich explosive structure are simulated numerically by using the 3D finite element code (LS-DYNA). Simulated results are compared with the corresponding cases without sandwich explosive structure. After ignition of the V-shaped sandwich explosive，the active face and back plates have great disturbance and cutting effect on the jet, which make the jet deviated, bended and the penetration capability decreases about 30％～90％. Disturbance of V-shaped sandwich explosive structure on jet increases with the increase of the impact angle. Variations of V-shaped angles can’t disturb observably penetration of jet. |
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| Keywords: | mechanics of explosion cutting effect numerical simulation V-shaped sandwich explosive jet |
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