| 引用本文: | 刘星雨,战仁军,欧阳的华,等.蒙特卡洛剖分投影法的爆震弹破片平均比动能评估.[J].国防科技大学学报,2021,43(5):107-116.[点击复制] |
| LIU Xingyu,ZHAN Renjun,OUYANG Dihua,et al.Evaluation of the average specific kinetic energy of stun grenade fragments by Monte Carlo subdivision projection simulation[J].Journal of National University of Defense Technology,2021,43(5):107-116[点击复制] |
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| 蒙特卡洛剖分投影法的爆震弹破片平均比动能评估 |
| 刘星雨1,2,战仁军1,欧阳的华3,李永利1,2 |
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(1. 武警工程大学 装备管理与保障学院, 陕西 西安 710086;2. 上海交通大学 海洋智能装备与系统教育部重点实验室, 上海 200240;3. 西安建筑科技大学 资源工程学院, 陕西 西安 710055)
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| 摘要: |
| 为了评估爆震弹封装壳体破片致死、致伤半径,并削弱其平均比动能,基于蒙特卡洛剖分投影法建立破片平均比动能计算模型。通过LS-DYNA及自编程联合仿真方法对爆震弹自然破片、半预制破片比动能计算模型进行仿真求解,获得了全破片全时域的质量分布、初始速度、垂直靶分布、平均比动能阈值及安全半径等指标。结果表明:在相同装药参数下,半预制破片相比于自然破片,质量分布、初始速度阈值更低且更集中；在小于等于2.5 m范围内半预制破片平均比动能阈值比自然破片更低,大于2.5 m后半预制破片平均比动能阈值比自然破片更高。相比于自然破片,采用半预制破片可显著减小爆震弹破片的致死半径,但并不能明显增大其安全半径。 |
| 关键词: 自然破片 半预制破片 壳体破碎 飞散模型 平均比动能 蒙特卡洛剖分投影法 |
| DOI：10.11887/j.cn.202105013 |
| 投稿日期：2020-03-24 |
| 基金项目:陕西省自然科学基金资助项目(2019JQ-714) |
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| Evaluation of the average specific kinetic energy of stun grenade fragments by Monte Carlo subdivision projection simulation |
| LIU Xingyu1,2, ZHAN Renjun1, OUYANG Dihua3, LI Yongli1,2 |
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(1. Equipment Management and Guarantee Institute, Engineering University of PAP, Xi′an 710086, China;2. Key Laboratory of Marine Intelligent Equipment and Systems Ministry of Education, Shanghai Jiaotong University, Shanghai 200240, China;3. College of Resources Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China)
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| Abstract: |
| In order to evaluate the lethality and injury radius of the stun grenade fragments, and to reduce its average specific kinetic energy, the calculation model of the average specific kinetic energy of fragments was established, based on the Monte Carlo subdivision projection simulation method. With co-simulation method of LS-DYNA and self-programming, the calculation models of average specific kinetic energy of natural fragments and semi-prefabricated fragments of stun grenade were simulated and compared separately. The mass distribution, initial velocity, vertical target distribution, average specific kinetic energy threshold and safety radius of the whole fragments in the whole-time domain were obtained. The results show that the mass distribution and initial velocity threshold of semi-prefabricated fragments are lower and more concentrated than that of the natural fragments under the same charge parameters; within the range of less than 2.5 m, the average specific kinetic energy threshold of semi-prefabricated fragments is lower than that of the natural fragments; within the range of more than 2.5 m, the average specific kinetic energy threshold of semi-prefabricated fragments is higher than that of the natural fragments. Compared with the natural fragments, the semi-prefabricated fragments can significantly reduce the lethality radius, but cannot significantly improve the safety radius. |
| Keywords: natural fragment semi-prefabricated fragment shell breaking dispersion model average specific kinetic energy Monte Carlo subdivision projection simulation |
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