破片模拟弹侵彻船用钢靶板的计算模型

高照; 侯海量; 李永清

doi:10.11858/gywlxb.20180614

破片模拟弹侵彻船用钢靶板的计算模型

doi: 10.11858/gywlxb.20180614

海军工程大学舰船与海洋学院，湖北武汉　430033

基金项目: 国家自然科学基金（51479204，51679246）

详细信息

作者简介:
高　照（1993－），女，硕士，主要从事船舶结构力学研究. E-mail：gaozhao8686@163.com

通讯作者:
侯海量（1977－），男，博士，副教授，硕士生导师，主要从事船舶结构力学研究. E-mail： hou9611104@163.com

中图分类号: O344.7
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出版历程
- 收稿日期: 2018-08-09
- 修回日期: 2018-08-23
- 刊出日期: 2018-08-25

Numerical Calculation on Penetration of Ship Steel Plate by Fragment Simulated Projectile

College of Naval Architecture and Ocean Engineering, Naval University of Engineering, Wuhan 430033, China

摘要

摘要: 为研究破片模拟弹侵彻钢板的过程，将模拟弹冲击钢装甲的侵彻过程分为初始接触、弹体侵入、剪切冲塞和穿甲破坏4个阶段进行理论分析。当靶板剩余厚度的剪切冲塞抗力小于延性扩孔抗力时，靶板的破坏模式完全转变为剪切冲塞；剪切塞块速度与剩余弹体速度相同时，推导出破片模拟弹侵彻钢靶板的能量转化及剩余速度公式，与实验及有限元分析结果吻合较好。研究结果对于破片侵彻钢靶板威力设计具有一定实用价值。
- 侵彻 /
- 破片模拟弹 /
- 冲击 /
- 剩余速度
Abstract: To investigate the penetration of steel plates by fragment simulated projectiles (FSP), we carried out a theoretical analysis of the steel plate’s penetration process, dividing it into 4 stages, sequentially of initial contact, penetration, plugging and perforation and successfully obtaining the formula that calculate the penetration remaining velocity and energy transformation. The calculation result is in good agreement with theresults from experiment and finite element observation. The formula is applicable to practical steel plate design.
- penetration /
- fragment simulated projectiles /
- shock /
- remaining velocity

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图 1 弹体尺寸

Figure 1. Projectile parameter

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表 1 945钢的材料参数

Table 1. Material parameters of steel 945

E/GPa	ρ/(kg·m^-3)	ν	σ_s/MPa	σ_b/MPa	δ_s/%
205	7 770	0.32	≥440	550–685	≥20

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表 2 理论值与实验值及有限元模拟值结果对比

Table 2. Comparison of theoretical values with experimental values and finite element simulation results

No.	Experiment			Simulation	Theoretical		ε_r1/%	ε_r2/%
No.	h/mm	v₀/(m·s^-1)	v_r/(m·s^-1)	v_r/(m·s^-1)	u₀/(m·s^-1)	v_r/(m·s^-1)	ε_r1/%	ε_r2/%
1	4	1 067.5	843.8	903.4	431.5	882.9	4.6	−2.32
2	4	1 238.8	1 006.1	1 082.4	531.3	1 029.8	2.4	−5.11
3	6	1 055.1	726.6	807.0	424.1	794.4	9.3	−1.59
4	6	1 235.7	812.1	1 011.6	529.5	939.6	15.7	−7.66
5	8	1 052.9	681.8	689.8	422.8	743.7	9.1	8.32
6	8	1 232.7	755.3	913.0	527.8	884.8	17.2	14.64

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