Abstract
In this study, we perform calculations and experimental studies of the destruction of composite impactors from a porous tungsten–nickel–iron–cobalt alloy with 10 wt % tungsten titanium carbide at high-speed impact with steel barriers. In ballistic tests over a wide range of velocities, there is a significant excess of the penetration depth of these impactors into steel barriers compared to the mass-dimensional analog of a tungsten–nickel–iron alloy with 90% tungsten content. Based on the analysis of crater morphology and the structure of impactor fragments after introduction into the obstacle, we assume that the impactor is “self-sharpened” by localizing plastic deformation, which reduces the effective interaction area and increases the penetration depth. To describe the destruction, we modified the mathematical model of a porous ideal elastic-plastic body with a complex structure with the possibility of considering the adiabatic shear mechanism during interaction between the impactor and the obstacle.
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ACKNOWLEDGMENTS
In this study, we used the results obtained in the course of the implementation of project no. 8.2.09.2018, the Competitiveness Improvement Program of the National Research Tomsk State University.
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Translated by A. Ivanov
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Ishchenko, A.N., Afanas’eva, S.A., Belov, N.N. et al. Destruction Features of Impactors Made of a Porous Alloy Based on Tungsten with Reinforcing Filler When Interacting with Armored Obstacles. Tech. Phys. 65, 414–419 (2020). https://doi.org/10.1134/S106378422003010X
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DOI: https://doi.org/10.1134/S106378422003010X