High-strength and armored steels are used in different structural elements and in the development of new military equipment operating under extreme conditions, including high-velocity impact interaction and explosive loading. Under such conditions, the fracture is induced by the combination of different mechanisms that depend on the mechanical properties of materials, strain rate, stress state, temperature, etc. Experimental and computational research methods combine to gain additional information on the behavior of high-strength materials essential for modern military equipment in operation. The test results for the penetration of ARMOX 500T steel target 10 mm thick at different loading rates using a ballistic pendulum are presented. The results of a set of piercing tests with the strikers of three types became the basis for evaluating the integral energy characteristics of material deformation and fracture induced by impact interaction; the target penetration pulse against loading rate was constructed and used in the numerical simulation of impact interaction and validation of model material parameters. The finite element method was employed to numerically simulate the processes of dynamic target penetration with the Johnson-Cook material deformation model. The loading and strain rate effects on the results are estimated. The calculation results are compared with experimental data.
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Translated from Problemy Mitsnosti, No. 2, pp. 12 – 22, March – April, 2023
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Kondryakov, E.O., Danylyuk, V.E. & Kharchenko, V.V. Fracture Energy Characteristics of High-Strength Steels Penetrated with Armor-Piercing Strikers at Velocities Up to 1000 m/s. Strength Mater 55, 245–253 (2023). https://doi.org/10.1007/s11223-023-00519-2
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DOI: https://doi.org/10.1007/s11223-023-00519-2