球缺型EFP毁伤混凝土墙试验与数值仿真研究

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摘要为深入研究混凝土类目标在聚能装药作用下的侵彻效应和毁伤机理，设计一种大口径Φ 120 mm 球缺型EFP聚能装药，开展不同炸高下毁伤大尺寸混凝土墙试验。基于修正参数的RHT模型进行数值仿真，仿真结果与试验数据的最大相对误差为9.8 %，表明RHT模型的修正效果较好，数值模型可靠。在此基础上，分析炸高对毁伤效果的影响，并对EFP侵彻体与爆炸冲击波的联合毁伤元特性进行研究。结果表明，所设计的EFP聚能装药毁伤混凝土墙时，能够形成具有较大直径和深度的漏斗坑；炸高为20 cm至60 cm时，随着炸高的增大，漏斗坑直径逐渐减小，漏斗坑深度呈先减小再增大再减小，并逐渐稳定的趋势；炸高为20 cm（1.67倍装药直径）时，能够获得直径和深度都较大的漏斗坑，此时漏斗坑直径为6.83倍装药直径，漏斗坑深度为2.3倍装药直径；EFP侵彻对漏斗坑的形成起主导作用，在一定炸高范围内，爆炸冲击波对漏斗坑直径有增大作用，其与EFP侵彻体的耦合能够在一定程度上提高漏斗坑深度。

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	郝礼楷1
	2
	顾文彬1
	张亚栋3
	原奇4
	邹绍昕1
	刘明君5
	刘森琪2

关键词 ：球缺罩, 爆炸成型弹丸（EFP）, 侵彻, 爆炸冲击波, 混凝土, 漏斗坑

Abstract：To deeply study the penetration effect and damage mechanism of concrete targets under the action of the shaped charge, Φ 120 mm EFP with hemispherical liner was designed to carry out experiments of penetrating a concrete wall at different standoff distances. Based on the RHT model with modified parameters, the maximum relative error between simulation results and experimental data is 9.8 %, indicating that the RHT model has a good correction effect and the numerical model is reliable. On this basis, the impact of the standoff distance on the penetration damage effect is analyzed, and the combined damage element characteristics of the EFP penetrator and the explosion shock wave are studied. The results show that when the designed EFP penetrates the concrete wall, a funnel pit with a large diameter and depth is formed on the wall. When the standoff distance changes from 20 cm to 60 cm, with the increase of blasting height, the diameter of the funnel pit decreases gradually, and the depth of the funnel pit decreases first, then increases and then decreases, and tends to be stable. When the standoff distance is 20 cm (1.67 times of charge diameter), the funnel pit with a large diameter and depth can be obtained. The diameter is about 6.83 times the charge diameter, and the depth is 2.3 times the charge diameter. EFP penetration plays a leading role in the formation of the funnel pit, and within a certain explosion height range, the explosion shock wave can increase the diameter of the funnel pit, and its coupling with the EFP penetrator can improve the depth of the funnel pit to a certain extent.

Key words： hemispherical liner explosively formed projectile (EFP) penetration explosion shock concrete funnel pit

收稿日期: 2021-11-01 出版日期: 2022-01-15

引用本文:

郝礼楷1,2，顾文彬1，张亚栋3，原奇4，邹绍昕1，刘明君5，刘森琪2. 球缺型EFP毁伤混凝土墙试验与数值仿真研究[J]. 振动与冲击, 2023, 42(1): 10-18.
HAO Likai1,2, GU Wenbin1, ZHANG Yadong3, YUAN Qi4, ZOU Shaoxin1, LIU Mingjun5, LIU Sengqi2. Tests and numerical simulation for hemispherical EFP penetrator damaging a concrete wall. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(1): 10-18.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I1/10

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