长径比对侵彻阻力的影响

吴普磊; 李鹏飞; 杨磊; 赵向军; 宋浦

doi:10.11858/gywlxb.20170631

长径比对侵彻阻力的影响

doi: 10.11858/gywlxb.20170631

西安近代化学研究所，陕西西安 710065

基金项目:

装备预研基金

详细信息

作者简介:
吴普磊(1992—), 男, 硕士研究生, 主要从事战斗部设计及终点效应研究.E-mail:505336201@qq.com

通讯作者:
宋浦(1973—), 男, 博士, 研究员, 主要从事战斗部毁伤技术研究.E-mail:songpu73@163.com

中图分类号: O385
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出版历程
- 收稿日期: 2017-08-15
- 修回日期: 2017-11-06

Influence of Aspect Ratio on the Penetration Resistance

Xi'an Modern Chemistry Research Institute, Xi'an 710065, China

摘要

摘要: 基于经典空腔膨胀理论、Forrestal阻力修正模型和加速度阻力模型研究了战斗部侵彻强度靶过程中长径比对于侵彻阻力的影响，通过对不同长径比条件下战斗部侵彻余速的计算，分析了长径比对阻力项系数的影响，讨论了3种理论的适用范围。结果表明：当战斗部长径比小于3时，加速度阻力项系数变化对侵彻过程影响较大；当长径比大于5时，3个模型的计算结果趋于一致，均适用于工程计算。
- 弹药工程 /
- 侵彻 /
- 长径比 /
- 阻力项系数
Abstract: In this paper, the influence of the aspect ratio on the penetration resistance in the target penetration process of the warhead was studied based on the classical cavity expansion theory, the modified Forrestal resistance model and the acceleration resistance model.The influence of the aspect ratio on the resistance term coefficient was analyzed and the range of applicability of the three theories was discussed by calculating the penetration residual velocities of the warhead with different aspect ratios.The results show that the variation of the acceleration resistance term coefficient has a significant influence on the penetration process when the aspect ratio is below 3;when the aspect ratio is above 5, the results of the three models tend to converge, and they are all applicable to engineering calculation.
- ammunition engineering /
- penetration /
- aspect ratio /
- resistance term coefficient

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图 1 靶后余速计算结果

Figure 1. Calculation results of residual velocity

下载: 全尺寸图片幻灯片

图 2 计算结果差异对比

Figure 2. Comparison of calculated results

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图 3 不同长径比下侵彻阻力时间变化曲线

Figure 3. Penetration resistance-time curve with different aspect ratios

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表 1 长径比与加速度项系数的关系

Table 1. Relationship between aspect ratio and acceleration term coefficient

φ	C_rt
1	0.482
3	0.161
5	0.092
9	0.054
12	0.042
15	0.031
20	0.024

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参考文献(13)

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