Abstract
The paper presents the results of numerical simulation of the stressstrain state that occurs in the tool during drawing a hexagonal rod by “hexagon-hexagon” scheme. The aim of the work was to study the influence of the angle of the working zone of the drawing tool and the magnitude of a single deformation on the contact stresses arising in the tool, the stress intensity, and the magnitude of elastic deformation. Finite element modeling in the Abaqus software package was chosen as the method used. The novelty of the results is in obtaining unique data on the localization of stresses in the body of a drawing tool for a specific type of long metal products. As a result of the analysis, it was found that a decrease in the angle of the working area of the drawing tool leads to the localization of contact stresses in the region of the hexagon vertices, as well as to an increase in stress intensity. For this reason, from the point of view of increasing tool lifecycle, the drawing of hexagonal profiles should be carried out at increased angles of the working area of the die. The use of increased angles will lead to a decrease in the length of the working area of the die, which in turn will favorably affect the friction conditions in the deformation zone. It has also been established that a decrease in the value of a single strain creates more favorable conditions for the stressstrain state of the tool, namely, it leads to a decrease in the negative effect of contact stresses.
Keywords:
drawing, steel rods, stressstrain state, tool, finite element modeling.