EXPERIMENTAL STUDY OF AN ALUMINUM PROJECTILE INTERACTING WITH A WIRE MESH SCREEN DURING OBLIQUE IMPACT AT VELOCITIES UP TO 7 km/s
P. N. Kalmykov1, N. V. Lapichev1, A. I. Leontyev1, N. N. Myagkov2, A. V. Salnikov1, T. A. Shumikhin2
1Russian Federal Nuclear Center-All-Russian Research Institute of Experimental Physics, Sarov, Russia
2Institute of Applied Mechanics, Russian Academy of Sciences, Moscow, Russia
Keywords: hypervelocity impact, spaced armor, thin bumper, wire mesh screen, oblique impact, fragmentation
Abstract
We experimentally investigate the perforation of wire mesh screens by an aluminum projectile over a range of impact angles. The study focuses on the fragmentation mechanism driven by the penetration of mesh wires into the projectile material. A series of hypervelocity impact tests on thin mesh screens reveal the following: as shockwave-induced fragmentation diminishes and the impact angle increases, the projectile undergoes fragmentation primarily via the wire penetration mechanism. We assess the performance of a mesh screen as a protective layer at various impact angles, comparing its effectiveness to that of a solid bumper shield. Additionally, the ballistic characteristics of the resulting fragment cloud are determined.
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