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23. Investigation of Elastoplastic Properties of Tungsten Carbide-Based Alloy Strikers in Interaction with a Steel Target by the Computational-Experimental Method

Author

Afanaseva, Svetlana A., Belov, Nikolai N., Starenchenko, V. A., Stepanov, E. Yu., Chupashev, Andrey V., Yugov, A. A., Yugov, Nikolai T., Burkin, Viktor V., Diachkovskii, Alexei S., Ishchenko, Aleksandr N., Lipatnikova, Ya. D., Rogaev, Konstantin S., Sammel, A. Yu., Skosyrskii, Anatolii Bronislavovich, and Solov’eva, Yu. V.

Subjects
ударники, упругопластические свойства, General Engineering, Condensed Matter Physics, сплавы на основе карбида вольфрама, математическое моделирование
Abstract

A mathematical model has been constructed for the behavior of a tungsten carbide alloy on the basis of TC8 (tungsten carbide, 92%; cobalt, 8%) and WNFC (W-Ni-Fe-Co), or TNIC (tungsten, nickel, iron, and cobalt), in conditions of shock-wave loading. A scheme has been suggested for the process of mass loss and self-sharpening of the striker in dynamic interaction with the target. The computational-experimental method has been used to investigate the capacity of cylindrical strikers made of this composite to penetrate into a steel target at an impact velocity of 1260 m/s with account for the dependence of yield stress on the intensity of plastic deformation considering both the stage of strengthening and the stage of its structural softening in the process of deformation.

Published
2022

29. Investigation of Elastoplastic Properties of Tungsten Carbide-Based Alloy Strikers in Interaction with a Steel Target by the Computational-Experimental Method.

Author

Afanas'eva, S. A., Belov, N. N., Burkin, V. V., Diachkovskii, A. S., Ishchenko, A. N., Lipatnikova, Ya. D., Rogaev, K. S., Sammel', A. Yu., Skosyrskii, A. B., Solov'eva, Yu. V., Starenchenko, V. A., Stepanov, E. Yu., Chupashev, A. V., Yugov, A. A., and Yugov, N. T.

Subjects
TUNGSTEN carbide, IRON, STEEL, MATERIAL plasticity, YIELD stress, TUNGSTEN, TUNGSTEN alloys
Abstract

A mathematical model has been constructed for the behavior of a tungsten carbide alloy on the basis of TC8 (tungsten carbide, 92%; cobalt, 8%) and WNFC (W–Ni–Fe–Co), or TNIC (tungsten, nickel, iron, and cobalt), in conditions of shock-wave loading. A scheme has been suggested for the process of mass loss and self-sharpening of the striker in dynamic interaction with the target. The computational-experimental method has been used to investigate the capacity of cylindrical strikers made of this composite to penetrate into a steel target at an impact velocity of 1260 m/s with account for the dependence of yield stress on the intensity of plastic deformation considering both the stage of strengthening and the stage of its structural softening in the process of deformation. [ABSTRACT FROM AUTHOR]

Published
2022
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32. Experimental and Theoretical Investigations of the Specific Features of High-Velocity Motion of Supercavitating Strikers Made of Various Materials in Water.

Author

Afanas'eva, S. A., Bondarchuk, I. S., Burkin, V. V., D'yachkovskii, A. S., Ishchenko, A. N., Rogaev, K. S., Sammel', A. Y., Sidorov, A. D., Stepanov, E. Ya., and Chupashev, A. V.

Subjects
TUNGSTEN, VELOCITY, NICKEL, ALUMINUM, IRON, TUNGSTEN alloys
Abstract

Results are presented of an experimental-theoretical investigation of the motion in water of supercavitating strikers made of steel and aluminum and tungsten (TNI, i.e., tungsten, nickel, and iron) alloys in a broad velocity range. Estimates have been made of the ranges of velocities of entry into water in which the investigated supercavitating strikers from various materials are not destroyed and preserve the original shape. Experimental and computational data have been obtained on the value of deviation of the trajectories of two simultaneously starting from each other supercavitating strikers at the initial stage of their group motion in water depending on the materials they are made of. [ABSTRACT FROM AUTHOR]

Published
2021
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34. Students’ brain building as a means of safe behavior

Author

Galoyan G. S., Ishchenko T. N., and Muhametrahimova O. S.

Subjects
lcsh:Social Sciences, lcsh:H, knowledge, intellectual activity, Private life, personality, didactic system, tools, Pedagogy, thinking, lcsh:Q, lcsh:Science, Psychology
Abstract

мышление в процессе познания определяет не только качественные результаты обучения, но и влияет на становление личности и формирование безопасного поведения как в обществе, так и в индивидуальной жизни. В работе осуществлена попытка установления взаимосвязей между развитием мыслящей способности обучающихся и формированием безопасного поведения.intellectual activity in the process of perception and gaining knowledge defines not only the qualitative results of learning, but also affects the formation of personality and the formation of safe behavior in social and private life. The authors made an attempt to establish connection between the development of students’ intellectual activity and the formation of their safe behavior.

Published
2016

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