4340钢弹侵彻45号钢靶的温升数值模拟

doi:10.12382/bgxb.2023.0734

摘要/Abstract

摘要：

为获得弹体侵彻金属靶板过程中弹体温升的基本特性,采用一级轻气炮开展了4340钢球头弹侵彻45号钢靶的温升实验研究,并基于实验条件使用ANSYS/LS-DYNA软件建立了4340钢弹侵彻45号钢靶板的有限元模型,在数值模拟模型与实验结果拟合良好后,通过改变初始条件的方法详细讨论了4340钢弹侵彻45号钢靶时弹体初始速度、靶板厚度以及弹体侵彻2层靶板对弹靶间温度分布的影响。结果表明:弹体在侵彻过程中温升主要分布在弹体头部位置;弹体侵彻过程中的温升随着速度的增加而增加;当侵彻2层靶板时,弹体温升主要发生在侵彻第1层靶板过程中。

关键词: 45号钢靶, 侵彻, 4340钢, 温升, 数值模拟

Abstract:

In order to obtain the basic characteristics of the temperature rise of projectile during the process of penetrating into a metal target, the temperature rise of 4340 steel spherical projectile penetrating into 45# steel target isexperimentally studiedwith a first-stage light gas gun. Based on the experimental conditions, a finite element model of 4340 steel projectile penetrating into 45# steel target is established using ANSYS/LS-DYNA software. After a good fit between the numerical simulation model and the experimental results, the effects of the initial velocity of 4340 steel projectile, the thickness of target plate and the temperature distribution of two layers of target when 4340 steel projectile penetrates into 45# steel target are discussed in detail by changing the initial conditions. The results show that the temperature rise of projectile is mainly distributed in the head of projectile during the process of penetration. The temperature rise of projectile during penetration increases with the increase of velocity. When two layers of target are penetrated, the temperaturerise of projectile mainly occurs in the process of penetrating into the first layer of target.

Key words: 45# steel target, penetration, 4340 steel, temperature rise, numerical simulation

中图分类号:

TJ301

余双洋, 彭永. 4340钢弹侵彻45号钢靶的温升数值模拟[J]. 兵工学报, 2023, 44(S1): 144-151.

YU Shuangyang, PENG Yong. Numerical Simulation of Temperature Rise of 4340 Steel Projectile Penetrating into 45# Steel Target[J]. Acta Armamentarii, 2023, 44(S1): 144-151.

图/表 16

图1 轻气炮装置示意图

Fig.1 Schematic diagram of light gas gun installation

图2 弹体及弹体弹托组合体

Fig.2 Projectile and projectile support assembly

图3 靶板及其固定装置

Fig.3 Target and its fixing device

表1 实验初始条件及温度测试结果

Table 1 Initial experimental conditions and temperature test results

编号	初速度/ (m·s^-1)	时间间隔/ s	测量温度/ ℃	备注
1-1	625	79.2	-	有熔化痕迹
1-2	757	46.1	-	有熔化痕迹
1-3	427	53.5	70.3

图4 不同初始速度侵彻结束后弹靶状态

Fig.4 State of projectileand target after penetrating at different initial velocities

图5 侵彻后弹体温度测量(弹体初始速度427m/s)

Fig.5 Temperature measurement of projectile after penetrating (initial velocity: 427m/s)

图6 弹靶网格划分

Fig.6 Grid division of projectile and target

表2 弹体参数[17]

Table 2 Projectile parameters [17]

弹性模量 E/GPa	剪切模量 G/GPa	泊松比	A/MPa	B/MPa
207	78.0	0.300	792	510
n	C	m	T_m	T_r
0.260	0.014	1.03	1793	294

表3 靶板参数[18]

Table 3 Target parameters[18]

弹性模量 E/GPa	剪切模量 G/GPa	泊松比	A/MPa	B/MPa
200	77.0	0.300	507	320
n	C	m	T_m	T_r
0.280	0.064	1.06	1795	294

图7 不同速度数值模拟与实验结果弹靶交互状态对比

Fig.7 Comparison of projectile-target interaction states between numerical simulation and experimental results at different speeds

图8 数值模拟与实验结果弹体与靶板形状对比

Fig.8 Comparison of the shapes of projectile and target

图9 不同速度下弹体温度分布

Fig.9 Temperature distribution of projectile at different velocities

图10 侵彻不同厚度靶板弹靶温度分布(弹体初始速度625m/s)

Fig.10 Temperature distribution of the projectile and targets with different thicknesses(initial velocity: 625m/s)

图11 侵彻不同厚度靶板弹体温度分布

Fig.11 Temperature distribution of projectile penetrating into targets with different thicknesses

图12 侵彻2层3mm厚靶板弹体温度分布

Fig.12 Temperature distribution of projectile penetrating into 2 layers of 3mm-thick target

图13 侵彻3mm+2mm靶板弹体温度分布

Fig.13 Temperature distribution of projectile penetrating into 3mm+2mm target

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