| 杆式射流微元应力特性数值仿真 |
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| 引用本文： | 杜烨,冯顺山,李强,周彤.杆式射流微元应力特性数值仿真[J].北京理工大学学报,2015,35(S2):136-140. |
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| 作者姓名： | 杜烨 冯顺山 李强 周彤 |
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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;中北大学机电工程学院, 山西太原 030051,北京理工大学爆炸科学与技术国家重点实验室, 北京 100081,北京理工大学爆炸科学与技术国家重点实验室, 北京 100081,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： | 应用LS-DYNA动力学仿真软件及示踪点测试技术,对球缺型罩形成杆式射流的过程及不同位置微元所受应力随时间变化的规律进行了仿真研究. 通过分析药型罩顶部微元受轴向应力的二次峰值及持续时间、射流与杵体交界处微元等效应力、药型罩轴线上外侧微元与内侧微元应力差等参数,得到罩微元应力分布与杆式射流成型性的关系. 结果表明当罩锥角在100°~110°时,药型罩壁厚取0.07d时可得到成型性较好的杆式射流.
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| 关 键 词： | 杆式射流 数值仿真 示踪点 应力 |
| 收稿时间： | 2015/3/20 0:00:00 |
Numerical Simulation and Calculation of Pressure and Temperature of the Composite Rod-Like Jet Micro-Elements |
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| DU Ye,FENG Shun-shan,LI Qiang and ZHOU Tong.Numerical Simulation and Calculation of Pressure and Temperature of the Composite Rod-Like Jet Micro-Elements[J].Journal of Beijing Institute of Technology(Natural Science Edition),2015,35(S2):136-140. |
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| Authors: | DU Ye FENG Shun-shan LI Qiang and ZHOU Tong |
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| Institution: | State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;College of Mechatronic Engineering, North University of China, Taiyuan, Shanxi 030051, China,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China and State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Using the LS-DYNA dynamics simulation software and tracer testing technology, the formation process of jet formed by hemispherical shaped charge liner and the pressure of micro-elements changing with time were simulated. With research of the parameters of the axial stress's second peak value and duration of micro-elements on the top of liner, equivalent stress of micro-elements on the border of jet and slug and stress difference of micro-elements inside and outside of axis, the relationships between the stress distribution and rod-like jet formation of micro-elements were obtained. The results show that when the cone angle is in the range of 100 to 110 degrees and the wall thickness is 0.07d, the better rod-like jet can be obtained. |
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| Keywords: | rod-like jet numerical simulation trace stress |
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