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Deformation behavior of strip steel matrix under shot blasting impact descaling
Published in Domenico Lombardo, Ke Wang, Advances in Materials Science and Engineering, 2021
S. Wang, H.G. Liu, R.C. Hao, Z.X. Feng, X.C. Wang, Y.Z. Sun
As shown in Figure 8, under the high speed impact of the projectile, the metal is shaped to flow, and the flow direction is roughly shown by the arrow in the figure. Immediately below the projectile, a unit N bears the compressive stress caused by impact, as shown in Figure 8. In contrast, at a position far from the projectile, a unit M does not bear the impact force of the projectile in the direction of the Z-axis, and has a large degree of freedom in the direction of the Z-axis. However, the plastic flow of metal from the surrounding sides causes the unit M to undergo compressive stress along the X-axis. With the metal shaping flow, the unit M moves in the positive direction of the Z axis, and finally forms a convex part at the edge of the impact crater.
Dynamic responses and failure mechanism of composite double-arrow auxetic structure under impact loading
Published in Mechanics of Advanced Materials and Structures, 2023
Weimin Jiang, Yaoliang Ao, Jiayi Liu, Jingxi Liu, Wei Huang
The foam aluminum projectile impact test was carried out through the one-stage gas gun system, as shown in Figure 4. Figure 5 shows the schematic diagram of composite double-arrow auxetic structure under the local impact caused by the foam aluminum projectile. In order to strengthen the constraints of the clamping end, two steel iron blocks were placed at both ends of the sandwich cores. In Figure 5, L= 110 mm, D = 150 mm. The height of the foam aluminum projectile was H = 50 mm, and the diameter was d = 39.5 mm. The projectile was initially placed in the gun with a diameter of 40 mm, and then driven by high-pressure gas, with an initial velocity ranging from 57.1 to 133.2 m/s. The initial momentum of the projectile ranged from to