冲击起爆弹丸内装药延迟起爆数值模拟

章猛华; 王鹏新; 余永刚; 阮文俊; 王健; 宁惠君

doi:10.11883/1001-1455(2016)05-0728-06

冲击起爆弹丸内装药延迟起爆数值模拟

doi: 10.11883/1001-1455(2016)05-0728-06

1.
南京理工大学能源与动力工程学院，江苏南京 210094
2.
中国白城兵器试验中心，吉林白城 137001
3.
河南科技大学土木工程学院，河南洛阳 471023

基金项目: 国防预研究基金项目

详细信息

作者简介:
章猛华(1990—)，男，博士研究生, zmhalt@163.com

中图分类号: O383
计量
- 文章访问数: 4693
- HTML全文浏览量: 1326
- PDF下载量: 517
- 被引次数: 0
出版历程
- 收稿日期: 2015-01-20
- 修回日期: 2015-05-11
- 刊出日期: 2016-09-25

Numerical simulation of the delay time of impact initiated projectile

1.
School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
Baicheng Ordnance Test Center of China, Baicheng 137001, Jilin, China
3.
School of civil Engineering, Henan University of Science and Technology, Luoyang 471023, Henan, China

摘要

摘要: 对穿爆燃弹的穿靶及释能过程进行数值模拟，解释了SPH-FEM耦合方法在模拟冲击起爆过程的优越性。通过对不同弹芯头部形状、直径及材料的对比分析，得到了不同工况下装药热点成长的压力-时间曲线，计算结果表明：在弹芯直径不变的情况下，弹芯头部直角尖刺越短，装药的热点成长时间越短；在头部尖刺长度不变的情况下，减小弹芯直径，热点生成时间也缩短；选用钢弹芯比钨合金弹芯有一定靶后释能优势。模拟穿靶效果与真实穿靶效果符合较好，这种方法可以为穿爆类弹丸设计提供依据。
- 爆炸力学 /
- 冲击起爆 /
- 耦合算法 /
- 穿爆燃弹 /
- 光滑粒子
Abstract: In this work, we investigated the process of penetration and energy release of the impact initiated projectile was investigated using numerical simulation, verified the superiority of the coupling of smooth particle hydrodynamics (SPH) with finite element method (FEM) in impact initiation, and obtained pressure-time curves for the projectile's hot-point pressure growth in different operating conditions by analyzing its bullet core's different head shapes, diameters and materials. Our simulation results show that, for a given bullet core's diameter, the shorter the bullet head's spike length, the more reduced the initiation time for the explosives' hot-point growth; for a given bullet core's length, a reduced bullet core's diameter will lead to a reduced hot-point growth time; and bullet cores made from steel show greater advantage at delay initiation time over those made from tungsten alloy. The simulated effects of target penetration are fairly consistent with those from experimental results.
- mechanics of explosion /
- impact initiation /
- SPH /
- impact initiated projectile /
- coupling algorithm

HTML全文

图 1 穿爆燃弹结构

Figure 1. Bored armour-piercing explosive incendiary cartridge structure

下载: 全尺寸图片幻灯片

图 2 子弹数值模拟模型

Figure 2. Bullet simulation model

下载: 全尺寸图片幻灯片

图 3 SPH-FEM耦合靶板模型

Figure 3. SPH-FEM coupling target model

下载: 全尺寸图片幻灯片

图 4 热点成长时间与粒子直径的关系

Figure 4. Relationship of hot point growth time with particle diameters

下载: 全尺寸图片幻灯片

图 5 不同结构弹芯

Figure 5. Bullet cores with different structures

下载: 全尺寸图片幻灯片

图 6 热点压力成长曲线

Figure 6. Curves for hot point pressure growth

下载: 全尺寸图片幻灯片

图 7 不同释能时机的穿靶效果图

Figure 7. Effect of energy release time on target penetration

下载: 全尺寸图片幻灯片

图 8 弹芯过载曲线

Figure 8. Curves for bullet core overload

下载: 全尺寸图片幻灯片

图 9 热点压力成长曲线

Figure 9. Curves for hot-point pressure growth

下载: 全尺寸图片幻灯片

图 10 热点生成位置时刻图

Figure 10. Hot-point generated positions and moments

下载: 全尺寸图片幻灯片

图 11 子弹穿靶效果

Figure 11. Bullet's target penetration effect

下载: 全尺寸图片幻灯片

图 12 破片飞散效果

Figure 12. Fragments' flying effect

下载: 全尺寸图片幻灯片

表 1 PETN和Comp B材料参数

Table 1. Material parameters of PETN and Comp B

炸药	材料参数												产物参数					未反应物参数
炸药	I/μs^-1	b	a	x	G₁	c	d	y	G₂	e	g	z	ω	A/GPa	B/GPa	R₁	R₂	ω	A/GPa	B/GPa	R₁	R₂
PETN	20	0.222	0	4	0	0	0	0	400	0.222	0.667	1.4	0.25	589.2	16.92	4.4	1.2	1.173	3 746	-131.3	7.2	3.6
Comp B	44	0.222	0.01	4.0	414	0.222	0.667	2.0	0	0	0	0	0.34	524.2	7.67	4.2	1.1	0.893	77 810	-5.031	11.3	1.13

下载: 导出CSV

参考文献(10)

[1]	张德良, 罗忠文, 俞善炳, 等.穿爆弹撞靶效应数值分析[J].兵工学报, 1997, 18(2):102-106. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199700179225 Zhang Deliang, Luo Zhongwen, Yu Shanbin, et al. Numerical analyses of the effects of impact of a penetrating projectile on the target[J]. Acta Armamentarii, 1997, 18(2):102-106. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199700179225
[2]	纪冲, 龙源, 方向.基于FEM-SPH耦合法的弹丸侵彻钢纤维混凝土数值模拟[J].振动与冲击, 2010, 29(7):69-74. doi: 10.3969/j.issn.1000-3835.2010.07.015 Ji Chong, Long Yuan, Fang Xiang. Numerical simulation for projectile penetrating steel fiber reinforced concrete with FEM-SPH coupling algorithm[J]. Journal of Vibration and Shock, 2010, 29(7):69-74. doi: 10.3969/j.issn.1000-3835.2010.07.015
[3]	Century Dynamics Inc. Interactive non-linear dynamic analysis software AUTODYNTM user manual. Revision 3.0[CP]. USA: Century Dynamics Inc, 1997.
[4]	乐莉, 闫军, 钟秋海.超高速撞击仿真算法分析[J].系统仿真学报, 2004, 16(9):1941-1943. doi: 10.3969/j.issn.1004-731X.2004.09.025 Yue Li, Yan Jun, Zhong Qiuhai. Simulations of debris impacts using three different algorithms[J]. Journal of System Simulation, 2004, 16(9):1941-1943. doi: 10.3969/j.issn.1004-731X.2004.09.025
[5]	王吉, 王肖钧, 卞梁.光滑粒子法与有限元的耦合算法及其在冲击动力学中的应用[J].爆炸与冲击, 2007, 27(6):522-528. doi: 10.3321/j.issn:1001-1455.2007.06.007 Wang Ji, Wang Xiaojun, Bian Liang. Linking of smoothed particle hydrodynamics method to standard finite element method and its application in impact dynamics[J]. Explosion and Shock Waves, 2007, 27(6):522-528. doi: 10.3321/j.issn:1001-1455.2007.06.007
[6]	Attaway S W, Heinstein M W, Swegle J W. Coupling of Smooth particle hydrodynamic with finite element method[J]. Nuclear Engineering and Design, 1994, 150(2/3):199-205. doi: 10.1016-0029-5493(94)90136-8/
[7]	De Vuyst T, Vignjevic R, Campbell J C. Coupling between meshless and finite element methods[J]. International Journal of Impact Engineering, 2005, 31(8):1054-1064. doi: 10.1016/j.ijimpeng.2004.04.017
[8]	Xiao Y H, Han X, Hu D A. A coupling algorithm of finite element method and smoothed particle hydrodynamics for impact computations[J]. Computers, Materials & Continua, 2011, 23(1):9-34. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=a07c4b8549c5a92ea69f8ba69e561219
[9]	肖毅华, 胡德安, 韩旭, 等.一种自适应轴对称FEM-SPH耦合算法及其在高速冲击模拟中的应用[J].爆炸与冲击, 2012, 32(4):384-392. doi: 10.3969/j.issn.1001-1455.2012.04.007 Xiao Yihua, Hu Dean, Han Xu, et al. An adaptive axisymmetric FEM-SPH coupling algorithm and its application to high velocity impact simulation[J]. Explosive and Shock Waves, 2012, 32(4):384-392. doi: 10.3969/j.issn.1001-1455.2012.04.007
[10]	宋太阳.冲击起爆弹丸对薄板侵彻过程研究[J].弹道学报, 1999, 11(4):54-69. http://www.cnki.com.cn/Article/CJFDTOTAL-DDXB199904012.htm Song Taiyang. Theinvestigation on penetration process of projectile initiated by impact onto thin-sheet[J]. Journal of Ballistics, 1999, 11(4):54-69. http://www.cnki.com.cn/Article/CJFDTOTAL-DDXB199904012.htm