基于SPH方法模拟30 mm线膛炮波纹罩压垮过程的力学参数研究

王小峰; 陶钢; 任保祥; 庞春桥; 范强; 刘龙

doi:10.11883/bzycj-2017-0291

基于SPH方法模拟30 mm线膛炮波纹罩压垮过程的力学参数研究

doi: 10.11883/bzycj-2017-0291

王小峰¹,
陶钢^1, ,,
任保祥¹,
庞春桥¹,
范强²,
刘龙²

1.
南京理工大学能源与动力工程学院, 江苏南京 210094
2.
重庆长安工业(集团)有限责任公司, 重庆 401120

详细信息

作者简介:
王小峰(1993-), 男, 博士研究生

通讯作者:
陶钢, taogang@njust.edu.cn

中图分类号: O383;TJ410;TJ413.2
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- 被引次数: 0
出版历程
- 收稿日期: 2017-08-06
- 修回日期: 2018-03-05
- 刊出日期: 2019-01-05

Mechanical parameters of the overwhelm process of fluted liner for 30 mm rifled gun based on SPH method

1.
School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
Chongqing Chang'an Industry(Group) Limited Liability Company, Chongqing 401120, China

摘要

摘要: 为研究高旋转对30 mm聚能装药破甲作用的影响机理及自旋补偿原理，采用LS-DYNA有限元软件中的SPH方法模拟30 mm线膛炮波纹罩的压垮过程，得到粒子的实际运动可分解成向心运动与绕中心圆周切线运动，提出压垮过程的4个阶段：压垮前期、缓冲期、波纹槽区域粒子速度增大期和中心粒子相互作用期。射流形成层沿逆时针方向旋转，而形成杵体的材料以相反方向旋转。结果表明：波纹罩特殊设计可以补偿旋转扰动对30 mm聚能装药侵彻作用的负面影响。
- SPH方法 /
- 聚能装药 /
- 波纹罩 /
- 自旋补偿 /
- 压垮过程 /
- 转速
Abstract: In order to study the effect of high rotation on the shell-penetration of 30 mm shaped charge and the mechanism of spin-compensation, we simulated the overwhelm process of the fluted liner for the 30 mm rifle gun using the SPH method of LS-DYNA finite element software, and found that the actual movement of particles can be decomposed into centripetal motion and tangential motion around the center circle. We then put forward the four stages of the overwhelm process, those of the early crush, the buffer, the particle velocity increase in the fluted liner area and the central particle interaction. The jet forming layer rotates in a counterclockwise direction, whereas the material forming the pestle body rotates in the opposite direction. The results show that the special design of the fluted liner can compensate the negative impact of the rotating disturbance on the penetration effect of the 30 mm shaped charge. The compensating rotating speed of the projectile is 379 r/s and larger.
- SPH method /
- shaped charge /
- fluted liner /
- spin-compensation /
- overwhelm process /
- rotating speed

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图 1 波纹罩结构参数及分类

Figure 1. Structural parameters and classification of fluted liner

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图 2 30 mm小口径炮弹基本几何参数

Figure 2. Basic geometric parameters of 30 mm small-caliber shell

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图 3 二维波纹罩模型

Figure 3. Two-dimensional fluted liner model

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图 4 SPH节点计算模型

Figure 4. Calculation model of SPH node

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图 5 波纹罩压垮过程等效应力变化云图

Figure 5. Equivalent stress variation cloud of fluted liner's overwhelm process

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图 6 波纹罩角速度变化曲线

Figure 6. Curve of fluted liner's angular velocity

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图 7 波纹槽区域选取的粒子

Figure 7. Particles selected in fluted groove area

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图 8 波纹槽区域粒子速度变化曲线

Figure 8. Curves of particle velocity in fluted groove area

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图 9 不同粒子密度时SPH计算模型

Figure 9. SPH calculation model for different particle densities

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图 10 不同粒子密度时波纹槽顶端与底端粒子速度曲线

Figure 10. Particle velocity curves at the top and bottom of fluted groove at different particle densities

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图 11 波纹槽前端粒子速度分布

Figure 11. Particle velocity distribution at the front of fluted groove area

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表 1 药型罩材料参数

Table 1. Material parameters of liner

ρ/(g·cm^-3)	G/GPa	A/GPa	B/GPa	n	c	m	T_m/K
8.96	46	0.09	0.292	0.31	0.025	1.09	1 356

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表 2 药型罩状态方程参数

Table 2. State equation parameters of liner

C	S₁	S₂	S₃	γ₀	A
0.394	1.489	0	0	2.02	0.47

下载: 导出CSV

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