Mathematical modeling of the evolution of a tribosystem in the process of formation of equilibrium roughness of a frictional contact


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Abstract

As the science of friction developed, tribologists showed that reliable operation of friction units is determined by the wear resistance of the surface layer, its ability to adapt to changing operating conditions. In this regard, there is a need not only to create structures on the surfaces of friction units that have the properties of self-regulation and self-organization, but also to monitor changes in the characteristics of the surface layer. This article presents an innovative methodology for monitoring the life cycle of surface layers coated by vacuum ion-plasma treatment. In this paper, we propose a dynamic model based on the hypothesis that roughness is both a factor that excites mechanical vibrations and a consequence of these vibrations, whereas roughness changes as a result of wear under the influence of local dynamic forces. It is shown that a friction pair is a nonlinear system with complex feedbacks. Its stationary motion can be considered as a strange attractor. The randomness of motion in the vicinity of the limit cycle is due to the presence of a link of constant delay with rigid positive feedback in the model. As a result, there is constant reconfiguration of the amplitude and phase of the oscillations.

About the authors

I. V. Kolesnikov

Rostov State Transport University

Author for correspondence.
Email: oooedt@rambler.ru
ORCID iD: 0000-0002-3265-0871

Corresponding Member of the Russian Academy of Sciences, Head of the Research Laboratory “Nanotechnologies and New Materials”

Russian Federation

P. A. Koropets

Rostov State Transport University

Email: pkoropets@gmail.com
ORCID iD: 0000-0001-6308-8095

Candidate of Science (Engineering), Senior Researcher of the Research Laboratory of the Department “Theoretical Mechanics”

Russian Federation

D. S. Manturov

Rostov State Transport University

Email: manturovds@rgups.ru
ORCID iD: 0000-0002-9977-6997

Candidate of Science (Engineering), Senior Researcher of the Research Laboratory of the Department “Theoretical Mechanics”

Russian Federation

Ye. V. Shakhmatov

Samara National Research University

Email: shakhm@ssau.ru

Academician of the Russian Academy of Sciences, Head of the Department of Power Plant Automatic Systems

Russian Federation

References

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