Investigation of multiple contact interaction of elements of shearing dies

Authors

DOI:

https://doi.org/10.15587/1729-4061.2019.174086

Keywords:

contact interaction, shearing die, stress-strain state, contact pressure

Abstract

When justifying the design parameters, it is necessary to carry out the analysis of the strain-strain state of individual elements of technological systems, which are sets of parts under contact interaction conditions. These problems are nonlinear, and the principle of superposition does not apply to them. For this reason, the amount of calculations increases dramatically. To overcome this drawback, methods and models for the rapid and precise study of the strain-strain state of complex objects, taking into account contact interaction are developed. The feature of the problem statement is that the solution of contact problems under certain conditions linearly depends on the load. The patterns of contact pressure distribution are determined. It is concentrated in the areas of constant shape and size. Only the scale of contact pressure distribution varies.

This gives an opportunity to significantly accelerate design studies of die tooling while preserving the accuracy of numerical modeling of the stress-strain state.

The developed approach involves a combination of advantages of numerical and analytical models and methods for analyzing the stress-strain state of elements of shearing dies, taking into account contact interaction. This concerns the possibility to solve problems for a system of complex-shaped contacting bodies, which is impossible with the use of analytical models. On the other hand, the possibility of scaling the solutions of these problems with the stamping force is substantiated, which is generally not performed for nonlinear contact problems. So, it is sufficient to solve the problem of determining the strain-strain state of elements of such a shearing die. For the other value of stamping force, the proportionality rule is applied. Thus, the efficiency of research sharply increases and high accuracy of the obtained results is ensured.

Author Biographies

Mykola M. Tkachuk, National Technical University «Kharkіv Polytechnic Institute» Kyrpychova str., 2, Kharkiv, Ukraine, 61002

PhD, Senior Researcher

Department of Theory and Systems of Automated Design of Mechanisms and Machines

Andriy Grabovskiy, National Technical University «Kharkіv Polytechnic Institute» Kyrpychova str., 2, Kharkiv, Ukraine, 61002

PhD, Senior Researcher

Department of Theory and Computer-Aided Design of Mechanisms and Machines

Mykola Tkachuk A., National Technical University «Kharkіv Polytechnic Institute» Kyrpychova str., 2, Kharkiv, Ukraine, 61002

Doctor of Technical Sciences, Professor

Department of Theory and Computer-Aided Design of Mechanisms and Machines

Iryna Hrechka, National Technical University «Kharkіv Polytechnic Institute» Kyrpychova str., 2, Kharkiv, Ukraine, 61002

PhD, Associate Professor

Department of Theory and Computer-Aided Design of Mechanisms and Machines

Olga Ishchenko, Dmytro Motornyi Tavria State Agrotechnological University B. Khmelnytskoho аve., 18, Melitopol, Ukraine, 72310

Senior Lecturer

Department of Mathematics and Physics

Natalia Domina, Dmytro Motornyi Tavria State Agrotechnological University B. Khmelnytskoho аve., 18, Melitopol, Ukraine, 72310

PhD, Associate Professor

Department of Mathematics and Physics

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Published

2019-07-24

How to Cite

Tkachuk, M. M., Grabovskiy, A., Tkachuk A., M., Hrechka, I., Ishchenko, O., & Domina, N. (2019). Investigation of multiple contact interaction of elements of shearing dies. Eastern-European Journal of Enterprise Technologies, 4(7 (100), 6–15. https://doi.org/10.15587/1729-4061.2019.174086

Issue

Vol. 4 No. 7 (100) (2019): Applied mechanics

Section

Applied mechanics

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Copyright (c) 2019 Mykola M. Tkachuk, Andriy Grabovskiy, Mykola Tkachuk A., Iryna Hrechka, Olga Ishchenko, Natalia Domina

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