低侵彻性枪弹的入水研究

梁化鹏; 薛建锋; 沈培辉

doi:10.11858/gywlxb.20170538

低侵彻性枪弹的入水研究

doi: 10.11858/gywlxb.20170538

梁化鹏^1,,
薛建锋²,
沈培辉^1,*, ,

1.
南京理工大学智能弹药技术国防重点学科实验室，江苏南京 210094
2.
航空工业洪都660所, 江西南昌 330024

详细信息

作者简介:
梁化鹏(1992—), 男，硕士研究生，主要从事终点效应研究.E-mail:815532008@qq.com

通讯作者:
沈培辉(1958—), 男，教授，主要从事终点效应与目标毁伤研究.E-mail:sphjy8@mail.njust.edu.cn

中图分类号: O353.4;TJ410.2
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出版历程
- 收稿日期: 2017-02-21
- 修回日期: 2017-03-28

Research on the Low-Penetrating Bullets Entering Water

1.
Ministerial Key Laboratory of ZNDY, Nanjing University of Science & Technology, Nanjing 210094, China
2.
660 Design Institute of Hongdu Aviation Industry Group, AVIC, Nanchang 330024, China

摘要

摘要: 为提高子弹的低侵彻性，研究了一种空心开花型低侵彻弹。通过进行空心开花型低侵彻弹侵彻水介质的实验，研究了弹体头部在不同速度下的变形情况；利用LS-DYNA软件对开花弹入水过程进行数值模拟，得到子弹在不同入射速度下的速度衰减曲线和位移曲线。研究结果表明：开花弹入水过程中的头部开裂程度与速度有关，速度越高，弹头变形越大；弹头开裂成“花瓣状”可以有效降低子弹速度，增大侵彻阻力；开花弹高速侵彻下的位移小于低速下的位移，说明开花弹具有良好的低侵彻特性。
- 开花弹 /
- 低侵彻 /
- 水介质 /
- 变形
Abstract: In order to reduce the bullet destruction, the design of shrapnel, a new type of bullet based on the standard small bore bullet, is proposed.We performed the experiment of water penetration of the shrapnel to study the deformation of the projectile head at different speeds, and conducted the corresponding numerical simulation using LS-DYNA and obtained the projectile's velocity attenuation and displacement curve.The results show that the degree of deformation of the projectile's head is related to its speed, the higher the speed, the greater the warhead deformation.The warhead cracking into "petals" can effectively reduce the bullet velocity, and raise the penetration resistance.The displacement in high speed penetration is less than that in low speed penetration, which indicates that the shrapnel has a good low-penetrating characteristic.
- shrapnel /
- low-penetration /
- water medium /
- deformation

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图 1 实验现场

Figure 1. Experiment set-up

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图 2 实验用开花弹

Figure 2. Shrapnel of experiment

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图 3 弹头入水的有限元模型

Figure 3. Finite element model of projectilepenetrating into water

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图 4 弹头入水的变形过程

Figure 4. Deformation process of projectilepenetrating into water

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图 5 速度衰减曲线

Figure 5. Velocity attenuation curve

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图 6 位移衰减曲线

Figure 6. Displacement attenuation curve

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表 1 实验结果和仿真结果对比

Table 1. Comparison of experiment and simulation results

Experiment		Simulation
Velocity/(m·s^-1)	Results	Velocity/(m·s^-1)	Results
408		400
501		500
610		600
702		700
814		800

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表 2 不同速度入水的弹丸头部变形比较

Table 2. Comparison of deformation of projectiles entering water at different velocities

Experiment			Simulation
Velocity/(m·s^-1)	D_max/mm	D_max/mm	Velocity/(m·s^-1)	D_max/mm
408	5.10，5.08	5.090	400	5.18
501	6.71，6.79	6.750	500	6.82
610	11.30，11.23	11.265	600	11.48
702	13.82，13.80	13.810	700	13.83
814	13.81，13.81	13.810	800	13.82

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