Dynamic cratering process during penetration of rigid projectile into concrete target

LI Pengcheng; ZHANG Xianfeng; WANG Guiji; LIU Chuang; LIU Junwei; DENG Yuxuan; SHENG Qiang

doi:10.11883/bzycj-2022-0512

Volume 43 Issue 9

Sep. 2023

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Article Navigation > Explosion And Shock Waves > 2023 > 43(9): 091402

LI Pengcheng, ZHANG Xianfeng, WANG Guiji, LIU Chuang, LIU Junwei, DENG Yuxuan, SHENG Qiang. Dynamic cratering process during penetration of rigid projectile into concrete target[J]. Explosion And Shock Waves, 2023, 43(9): 091402. doi: 10.11883/bzycj-2022-0512

Citation:

LI Pengcheng, ZHANG Xianfeng, WANG Guiji, LIU Chuang, LIU Junwei, DENG Yuxuan, SHENG Qiang. Dynamic cratering process during penetration of rigid projectile into concrete target[J]. Explosion And Shock Waves, 2023, 43(9): 091402. doi: 10.11883/bzycj-2022-0512

Citation:

LI Pengcheng, ZHANG Xianfeng, WANG Guiji, LIU Chuang, LIU Junwei, DENG Yuxuan, SHENG Qiang. Dynamic cratering process during penetration of rigid projectile into concrete target[J]. Explosion And Shock Waves, 2023, 43(9): 091402. doi: 10.11883/bzycj-2022-0512

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Dynamic cratering process during penetration of rigid projectile into concrete target

doi: 10.11883/bzycj-2022-0512

1.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

Received Date: 2022-11-13
Rev Recd Date: 2022-12-19

Available Online: 2023-02-08

Publish Date: 2023-09-11

Abstract

Abstract

In order to study the cratering stage in the dynamic penetration process of projectiles into the concrete targets, the cratering stage is further divided into two phases according to the damage of the projectile during penetration. Combined with the shape function of projectile head, streamline field of the Z model and normal expansion theory (NET), an analytical and calculation model of penetration resistance during the cratering stage is established, which considers the influence of concrete ejection process. Reliability of penetration resistance model during the cratering stage is then verified by test data taken from published papers. The advantages of the present model compared with the existing classical model are analyzed, while the influences of initial impact velocity of projectile, the caliber-radius-head and uniaxial compressive strength of concrete on the dynamic process during the cratering stage are analyzed. With the increase of the initial impact velocity of projectile, the diameter and depth of the ejection region gradually increase, the time of the ejection region to reach the maximum size is gradually shortened, and the time of the dynamic process during the cratering stage is also shortened. With the increase of the caliber-radius-head of the projectile, the diameter and depth of the ejection region gradually decrease, the time of the ejection region to reach the maximum size gradually increases, and the time of the dynamic process during the cratering stage increases, too. With the increase of uniaxial compressive strength of concrete, the diameter and depth of the ejection region are gradually reduced, the time of the ejection region to reach the maximum size is gradually shortened, and the time of the dynamic process during the cratering stage is also shortened. The velocity has the greatest influence on the dynamic process during the cratering stage of the projectile penetration into the concrete target, followed by the caliber-radius-head of the projectile and uniaxial compressive strength of concrete.
- projectile,
- penetration,
- concrete target,
- dynamic cratering

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References(41)

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