DOI: 10.18503/1995-2732-2024-22-3-170-177
Abstract
An adapted finite element model of the process of drawing bimetallic wire in a monolithic die was used to conduct an analytical study on the influence of unit strain and the die reduction angle on the change in the stress and strain state of steel-copper wire in the deformation zone. DEFORM-3D simulation software was chosen as a main research tool. The initial data for modeling were chosen as follows: steel-copper workpiece diameter was 6.0 mm, shell thickness was 0.5 mm, the material was copper M1, core diameter was 5.0 mm and material was steel50. The core and the shell were taken as plastic bodies. The coefficient of friction between the die and the shell is constant, namely 0.05 according to Coulomb’s law. The shell-core interaction in the Inter-Object Data Definition tool properties was set to Sticking Condition, and the Separable parameter was set to control possible delamination. DEFORM-3D calculates 9 options for drawing steel-copper wire with a diameter of 6.0 mm in dies at angles 2α of 12, 18 and 24 degrees and drawing ratio μ of 1.10, 1.20 and 1.30. The authors calculated drawing stresses, average normal pressure, Smirnov-Alyaev and Lode-Nadai stiffness coefficient distribution fields, and changes in the geometric dimensions of the shell and the core. The paper presents a rationale for deformation modes ensuring maximum stability of the drawing process. It has been shown that the proposed model factors into all the patterns previously determined by the coordinate grid method, but at the same time significantly speeds up and simplifies the process of calculating the strain state, providing the values of stresses acting on wire and design of the actual deformation zone.
Keywords
drawing, steel-copper wire, modeling, drawing, die reduction angle, reduction, stresses
For citation
Terentyev D.V., Usanov M.Yu., Shemetova E.S., Platov S.I., Kharitonov V.A. Assessing the Stress and Strain State of Steel-Copper Wire Based on Modeling of Drawing in a Monolithic Die. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2024, vol. 22, no. 3, pp. 170-177. https://doi.org/10.18503/1995-2732-2024-22-3-170-177
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