Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Study of 675 armor steel against cruise missile penetration
| DOI: | 10.11809/bqzbgcxb2023.11.009 |
| Keywords: | 675 armor steel; scaled cruise missile; performance of anti penetration; light gas gun experiment; the depth of the crater; the energy loss of projectile |
| Abstract: | In order to study the penetration resistance of 675 armor steel shield against cruise missile and analyze the mechanism of projectile and target action and mechanical behavior of armor steel, the experiments and numerical simulations of scaled cruise missile penetration of 675 armor steel are carried out. On this basis, the numerical simulation of 675 armor steel at different projectile penetration velocities are carried out. The results show that the scaled cruise missile penetrates into 675 armor steel, and because of the high hardness of the armor steel, the penetration is basically kept in the cratering stage, the cratering area and depth are small, and the overall deformation of the target plate is not significant. The projectile is fractured at the junction between the warhead and the projectile body. Because of the erosion of the projectile head and the loss of the energy of the projectile fracture, the deformation of the target plate mainly occurs before the fracture of the projectile. As the penetration velocity increases from 350 m/s to 600 m/s, the deformations of the target plate increase linearly with the velocity. The crater diameter increases from 1.1 times the outer diameter of the projectile to 1.5 times the outer diameter of the projectile, and the energy loss causes by mass erosion increases from 42.4% to 68.6%. The acceleration of the projectile reaches the maximum when the plastic deformation begins at the transition region from head to body of projectile, and then decreases rapidly until the projectile fractures. When the residual projectile begins to penetrate the target, the acceleration increases, then enters a plateau period where it oscillates and decreases slightly, and finally decreases to 0 rapidly.The acceleration of the projectile reaches the maximum when the plastic deformation begins at the transition region from head to body of projectile. |
| Issue: | Vol. 44 No. 11 (2023) |
| Published: | 2023-11-28 |
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