Rigid-body critical transformation velocity of a high-strength steel projectile penetrating concrete targets at high velocities

QIAN Bingwen; ZHOU Gang; LI Mingrui; YIN Lixin; GAO Pengfei; CHEN Chunlin; MA Kun

doi:10.11883/bzycj-2022-0309

Volume 44 Issue 10

Oct. 2024

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QIAN Bingwen, ZHOU Gang, LI Mingrui, YIN Lixin, GAO Pengfei, CHEN Chunlin, MA Kun. Rigid-body critical transformation velocity of a high-strength steel projectile penetrating concrete targets at high velocities[J]. Explosion And Shock Waves, 2024, 44(10): 103301. doi: 10.11883/bzycj-2022-0309

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Rigid-body critical transformation velocity of a high-strength steel projectile penetrating concrete targets at high velocities

doi: 10.11883/bzycj-2022-0309

Northwest Institute of Nuclear Technology, Xi’an 710024, Shaanxi, China

Received Date: 2022-07-18
Rev Recd Date: 2024-04-30

Available Online: 2024-05-06

Publish Date: 2024-10-30

Abstract

Abstract

The accurate prediction of the critical penetration speed of a rigid body is a key issue in the study of high-strength steel projectile penetration into concrete targets at high velocities. This paper conducts experimental research on the penetration of C40 concrete targets by high-strength steel (G50) ogive-nosed long rod projectiles at the velocities of 1010 to 1660 m/s using a two-stage light gas gun, obtaining experimental data on the critical penetration velocity and penetration depth of the rigid body. Theoretical analysis of the critical penetration velocity of the rigid body and the penetration depth considering the projectile head erosion is also carried out, and the following conclusions are drawn: (1) the interval of the critical penetration velocity for G50 ogive-nosed long rod projectiles penetrating C40 concrete targets is 1320 to 1520 m/s; (2) based on existing penetration models, a new theoretical model for the critical penetration velocity of the rigid body was established, and the calculated results of the model are in good agreement with the experimental results of this paper and the literature; (3) a penetration depth model considering head erosion was established, which also matches the experimental results well; (4) the yield strength of the projectile has a significant effect on the critical penetration velocity of the rigid body, the unconfined compressive strength of the target has a minor effect on the critical penetration velocity, and the shape coefficient and size of the projectile before the experiment have no significant effect on the critical penetration velocity.
- high-speed penetration,
- rigid-body critical transformation velocity,
- high-strength steel,
- concrete,
- two-stage light-gas gun

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References

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