Experimental and numerical simulation research on damage effect of jetting projectile charge (JPC) on reinforced concrete wall

HAO Likai; XIE Xingbo; GU Wenbin; ZHANG Yadong; ZOU Shaoxin; LU Ming; KANG Gengxin

doi:10.11883/bzycj-2022-0294

Volume 43 Issue 2

Feb. 2023

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HAO Likai, XIE Xingbo, GU Wenbin, ZHANG Yadong, ZOU Shaoxin, LU Ming, KANG Gengxin. Experimental and numerical simulation research on damage effect of jetting projectile charge (JPC) on reinforced concrete wall[J]. Explosion And Shock Waves, 2023, 43(2): 023302. doi: 10.11883/bzycj-2022-0294

Citation:

HAO Likai, XIE Xingbo, GU Wenbin, ZHANG Yadong, ZOU Shaoxin, LU Ming, KANG Gengxin. Experimental and numerical simulation research on damage effect of jetting projectile charge (JPC) on reinforced concrete wall[J]. Explosion And Shock Waves, 2023, 43(2): 023302. doi: 10.11883/bzycj-2022-0294

Citation:

HAO Likai, XIE Xingbo, GU Wenbin, ZHANG Yadong, ZOU Shaoxin, LU Ming, KANG Gengxin. Experimental and numerical simulation research on damage effect of jetting projectile charge (JPC) on reinforced concrete wall[J]. Explosion And Shock Waves, 2023, 43(2): 023302. doi: 10.11883/bzycj-2022-0294

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Experimental and numerical simulation research on damage effect of jetting projectile charge (JPC) on reinforced concrete wall

doi: 10.11883/bzycj-2022-0294

1.
College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, Jiangsu, China
2.
Unit 31539 of PLA, Beijing 100043, China
3.
Engineering Research Center of Safety and Protection of Explosion and Impact of Ministry of Education, Southeast University, Nanjing 211189, Jiangsu, China
4.
National Defense Engineering College, Army Engineering University of PLA, Nanjing 210007, Jiangsu, China

Received Date: 2022-07-06
Rev Recd Date: 2022-12-02

Available Online: 2022-12-07

Publish Date: 2023-02-25

Abstract

Abstract

To meet the requirements of a tandem penetrating warhead for high penetration depth and large perforation, a jetting projectile charge (JPC) was designed. The damage test of a large-scale reinforced concrete wall was carried out to analyze the impact of standoff distance on the damaging effect. By constructing a large air domain covering the whole reinforced concrete wall for the transmission of explosion shock wave and JPC, the coupling damage of JPC high-speed penetration and explosion shock wave to the reinforced concrete wall was considered. The damage evolution, strain rate and other parameters of the Karagozian & Case (K&C) model were modified, based on which a numerical model was established to simulate the whole process of the combined damage of JPC and explosion shock wave to the reinforced concrete wall. The reliability of the numerical model was fully verified by comparing the simulation and test results from the failure mode, crater depth and crater diameter of the reinforced concrete wall. On this basis, the combined damage effect of JPC and explosion shock wave on the reinforced concrete wall was further studied, and the influence of wall thickness on the damaging effect was analyzed. The results show that JPC can penetrate the reinforced concrete wall with a thickness of 80 cm (6.67 times of charge diameter) at the standoff distance of 1.67 times and 2.50 times of charge diameter, and form cylindrical holes with a diameter of more than 6 cm (0.50 times of charge diameter). The multi-load damage characteristic of shaped charge determines the damage result of the reinforced concrete wall, and the explosion shock wave can intensify the damage range of the front crater and back crater of the reinforced concrete wall. The wall thickness has no significant effect on the diameter and depth of the crater on the front of the wall and the diameter of the internal penetration hole. With the increase of the wall thickness, the crater diameter on the back gradually decreases and the crater depth on the back gradually increases.
- jetting projectile charge (JPC),
- reinforced concrete wall,
- penetration,
- shock wave,
- combined damage

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References

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