Technology, energy, agriculture transport AIC

Viktor Matviychuk – Doctor of Technical Sciences, Full Professor, Head of the Department of Electric Power Engineering, Electrical Engineering and Electromechanics, Vinnitsa National Agrarian University (3 Solnechna St., Vinnitsa, 21008, Ukraine, email: vamatv50@gmail.com, https://orcid.org/0000-0002-2502-6878).

Volodymyr Mykhalevych – Doctor of Technical Sciences, Full Professor, Department of Electric Power Engineering, Electrical Engineering and Electromechanics, Vinnitsa National Agrarian University (3 Solnechna St., Vinnitsa, 21008, e-mail: mykhalevych@vntu.edu.ua)

Andrii Shtuts – Assistant Professor, Department of Electric Power Engineering, Electrical Engineering and Electromechanics, Vinnitsa National Agrarian University (3, Solnechna str., Vinnitsa, 21008, Ukraine, email: shtuts1989@gmail.com, https://orcid.org/0000-0002-4242-2100).

The processes of planting blanks by the rolling stamping method allow for the efficient production of a wide range of high-quality products, but the possibility of material destruction during deformation prevents the expansion of their technological capabilities. Further development of the processes is possible through the development of new technological schemes based on the analysis of deformation kinematics and the appointment of favorable technological parameters, taking into account their influence on the stress-strain state and deformability of the material of the workpieces. In order to widely use the method of assessing the deformability of workpieces, a reliable technique is needed, which provides for the presence of a mathematical model of the trajectory of deformation of material particles in the coordinates "stress state indicator - accumulated plastic deformation before failure." The work uses an approach to finding an analytical representation of the deformation trajectory based on the construction of a differential equation between the components of plastic deformation increments, followed by the solution of this equation and the identification of its parameters based on experimental data. According to the results of the research, the deformation trajectories of the material particles of the peripheral surface of the flange when planting by rolling stamping method were schematically constructed in the coordinates "intensity of deformations - stress state indicator". Based on the built model, damage accumulation can be simulated by changing the values of the model parameters for different materials and deformation paths. An analytical representation of the deformation trajectory in a parametric form was obtained. The advantages of representing the deformation trajectory in the form of parametric equations are the convenience of analyzing these trajectories. The advantage of the model of the trajectory of deformation of material particles in the coordinates "stress state indicator - plastic strain accumulated before failure" is the absence of a material constant in the analytical expression for the stress state, and the consequence is additional convenience of analyzing ratios and selecting the value of the material constant based on experimental data.

Matviychuk, V.A. (2022). Development of energy- and resource-saving technologies of procurement production. Technology, energy, transport of agricultural industry, 4 (119), 110–119. [in Ukrainian].
[2]     Matviychuk, V.A., Aliyev, I.S. (2009). Improving the processes of local rotational pressure processing based on the analysis of the deformability of metals : monograph. Kramatorsk: DGMA. [in Ukrainian]
[3]     Mikhalevich, V.M. (1998). Tensor models of damage accumulation. Vinnytsia: "UNIVERSUM-Vinnytsia". [in Ukrainian].
[4]     Matviychuk, V.A., Mikhalevich, V.M., Kolisnyk, M.A. (2022). Evaluation of the deformability of the material of the blanks during direct and reverse extrusion by the rolling stamping method. Vibrations in engineering and technology, 1(104), 81–91. [in Ukrainian].
[5]     Matviychuk, V.A., Mikhalevich, V.M. (2016). Development of local deformation processes : Monograph. Theory and practice of processing materials by pressure. Zaporozhye, ed. JSC "Motor Sich", 339–363. [in Ukrainian].
[6]     Mikhalevich, V.M., Lebedev, A.A., Dobranyuk Yu.V. (2011). Modeling of plastic deformation in a cylindrical specimen under edge compression. Strength of Materials, 43 (6), 591–603. [in English].
[7]     Mikhalevich, V.M., Dobranyuk, Yu.V. (2013). Modeling of the stress-strain and limit states of the surface of cylindrical samples under end compression : monograph. Vinnytsia : VNTU. [in Ukrainian].
[8]     Mikhalevich, V.M., Dobranyuk, Yu.V., Kraevskyi, O.V. (2018). Comparative study of models of limit plastic deformations. Herald of mechanical engineering and transport, 2 (8). 56–64. [in Ukrainian]
[9]     Lebedev, А.A., Mikhalevich, V.M. (2003). On the Choice of Stress Invariants in Solving Problems of Mechanics. Strength of Materials. Plenum Publishing Corporation (USA), May - June,35 (3), 217–224. [in English].
[10]     Kraevsky, V.O., Matviychuk, V.A., Mikhalevich, V.M. (2003). Influence of technological parameters on the kinematics of cold end rolling. Improvement of pressure processing processes and equipment in mechanical engineering and metallurgy. Kramatorsk. Slavyansk. 286–291. [in Ukrainian]
[11]     Gundebommu, S.L., Matvijchuk, V., Rubanenko, O., Branitskiy, Yu. (2021). Justification and development of methods of building curves boundary deformation of metals. Materials Today: Proceedings, 38, 3337–3344. [in English].
[12]     Viktor Matvijchuk, Andrii Shtuts, Mykola Kolisnyk, Ihor Kupchuk, Iryna Derevenko (2022). Investigation of the tubular and cylindrical billets stamping by rolling process with the use of computer simulation. Periodica Polytechnica, Mechanical Engineering, 1 (66), 51–58. [in English].