Determining the patterns of asymmetric interaction of plastic medium with counter-directional metal flow

Authors

DOI:

https://doi.org/10.15587/1729-4061.2024.293842

Keywords:

loading asymmetry, counter-directional metal flow, plane problem, effects of plastic deformation

Abstract

The plane problem of rolling theory is analytically solved using the method argument of functions of a complex variable. The solution to the plane problem has been strengthened from the point of view of the asymmetry of the process, which made it possible to consider the applied problem as the interaction of differently directed zones in the deformation zone. The interaction of lagging and advancing zones is represented as a combination of multidirectional processes in a single deformation zone. With a change in kinematic, power characteristics in local zones, the process parameters change in the entire deformation zone. Stressed states of intermediate loading schemes between stable and unstable rolling are considered. A feature of the interaction of zones with the opposite flow of metal is the analogy with the action of back tension on the deformation zone in literally all parameters - this is the presence of tensile stresses in the lagging zone, a decrease in local specific pressures, a shift in maximum normal stresses towards the exit from the rolls, a change in the length of the advance zone, reduction in rolling force.

The studies confirm and repeat the generally accepted provisions of the theory of rolling but reveal the effects of changes in the stress state under different loading models.

The results of the work make it possible to determine the modes of rolling processes visually and computationally under conditions of strong and weak interaction of zones with an oppositely directed metal flow.

The effects of plastic deformation with a decrease in the total effort in the processes that are within the reach of the limiting focus of crimping under conditions of increasing kinematic load when the gripping angles vary between 0,077…0,168 are given

Author Biographies

Valeriy Chigirinsky, Rudny Industrial Institute

Doctor of Technical Sciences, Professor

Department of Metallurgy and Mining

Abdrakhman Naizabekov, Rudny Industrial Institute

Doctor of Technical Sciences, Professor, Chairman of the Management Board-Rector

Department of Metallurgy and Mining

Sergey Lezhnev, Rudny Industrial Institute

PhD, Associate Professor

Department of Metallurgy and Mining

Olena Naumenko, Dnipro University of Technology

Senior Lecturer

Department of Mechanical and Biomedical Engineering

Sergey Kuzmin, Rudny Industrial Institute

PhD

Department of Metallurgy and Mining

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Determining the patterns of asymmetric interaction of plastic medium with counter-directional metal flow

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Published

2024-02-28

How to Cite

Chigirinsky, V., Naizabekov, A., Lezhnev, S., Naumenko, O., & Kuzmin, S. (2024). Determining the patterns of asymmetric interaction of plastic medium with counter-directional metal flow. Eastern-European Journal of Enterprise Technologies, 1(7 (127), 66–82. https://doi.org/10.15587/1729-4061.2024.293842

Issue

Vol. 1 No. 7 (127) (2024): Applied mechanics

Section

Applied mechanics

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Copyright (c) 2023 Valeriy Chigirinsky, Abdrakhman Naizabekov, Sergey Lezhnev, Olena Naumenko, Sergey Kuzmin

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