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Rolling
ArticleName Features of finite element modeling for hot rolling process of clad sheets and strips
DOI 10.17580/cisisr.2023.02.08
ArticleAuthor A. G. Zinyagin, N. R. Borisenko, A. V. Muntin, M. O. Kruychkova
ArticleAuthorData

Bauman Moscow State Technical University (Moscow, Russia)

A. G. Zinyagin, Cand. Eng., Associate Prof., e-mail: ziniagin_ag@bmstu.ru
N. R. Borisenko, Post Graduate, e-mail: BorisenkoNikita17@yandex.ru
A. V. Muntin, Cand. Eng., Associate Prof., e-mail: muntin_av@bmstu.ru
M. O. Kryuchkova, Senior Lecturer, e-mail: mariya.mironova@bmstu.ru

Abstract

This article discusses application of mathematical modeling based on the finite elements method (FEM) to analyze the process of rolling clad sheets and strips. Examples of studies are given, in which FEM was used to analyze the stress state at the interface between layers, to consider the effect of rolls speed mismatch on the rolling process, to determine the criteria for layer adhesion and other process parameters. However, some of these studies do not take into account a number of aspects that can increase modeling reliability. The article considers the most important aspects of development of the model for rolling clad sheets based on the FEM. Two main ways of modeling the clad and base layers are described, setting different properties of the same body or modeling layers by different contact bodies. Particular attention is paid to the choice of model parameters and the correct division of layers into elements to avoid loss of contact and penetration of elements into each other. This article also provides recommendations on the choice of friction coefficients for various contact pairs. When choosing friction coefficients, it is necessary to take into account the materials of the contact surfaces, their condition and operating conditions. In addition, the friction coefficient is an important factor affecting the accuracy of modeling, and it is recommended to compare the simulation results with experimental data to obtain its refined values. Examples of development of the models based on the FEM are given, which were adapted according to the results of laboratory experiments and applied to calculate the parameters of industrial rolling. Satisfactory convergence of modeling results with the results of industrial rolling is shown.
The researches were carried out within the RF program of strategic academic leadership “Prioritet-2030”, directed on support of development programs in higher education organizations, scientific project PRIOR/SN/NU/22/SP5/26 “Development of innovative digital tools for use of applied artificial intellect and advanced statistical analysis of Big Data in technological processes of manufacturing metallurgical products”.

keywords Modeling, finite element method, friction coefficient, clad rolled products, division into elements, relative deformation of layers
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