Numerical Method for Determining the Real Contact Area of Contacting Bodies

Ezhov, A. D.; Bykov, L. V.; Mesnyankin, S. Yu.

doi:10.1134/s1027451018050130

Cited by 6 publications

(1 citation statement)

References 4 publications

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“…Современные программные и аппаратные средства цифровой обработки различных видов информации позволяют создавать цифровые двойники микрорельефа поверхности для контактных задач [26][27][28][29]. С их помощью можно создавать цифровые модели контактной пары на основе параметров рельефа поверхности, полностью учитывающие микрорельеф и повторяющие интегральные характеристики исходных данных.…”

Section: Introductionunclassified

Determination of the Contact Area Under Cyclic Loading of Contact Pairs of Isotropic Materials on the Basis of 3d Surface Microrelief Modelling

Ezhov

Bykov

Krylova

2022

PNRPU Mechanics Bulletin

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The parameters of the surface microrelief are paramount in the problems of frictional interaction of parts, the flow of liquid and gas in channels, ensuring the required thermal conditions and the stress-strain state of the structure. The solution of the problem of ensuring the optimal thermal regime for a significant range of technical products often becomes decisive in the design of products operating under conditions of high-intensity heat flows. Transit heat fluxes flowing through the product, as well as heat fluxes from own heat sources, must be either accumulated or removed to the external space. In this case, the directions of the heat flux vectors are determined by the design features of the products, including through various contact connections. Obviously, a reliable determination of the parameters of the contact interaction of product parts is the basis for a reliable analysis of the stress-strain and thermal state of a wide range of structures operating under conditions of high-intensity heat flows. The operational characteristics of the contacting parts of the structure are directly determined by the properties of the contact of the mating surfaces. When solving many problems of thermal, mechanical and electrical contact interaction, surface roughness is a major factor. The processes of friction and wear occur precisely on the actual contact area and depend not only on the properties of the material, but also on the intercontact pressure on this area, since the magnitude of the actual pressure determines the destruction of surface films and the appearance of adhesive bonds in the contact. In the presented work, the change in the actual contact area under cyclic loading of contact pairs of materials based on digital twins of contact surfaces in a wide range of compressive pressures is considered.

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Section: Introductionunclassified

Determination of the Contact Area Under Cyclic Loading of Contact Pairs of Isotropic Materials on the Basis of 3d Surface Microrelief Modelling

Ezhov

Bykov

Krylova

2022

PNRPU Mechanics Bulletin

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Investigation of the thermal characteristics of a metal-anisotropic composite contact pair

Talalaeva

Bykov

Ezhov

2021

J. Phys.: Conf. Ser.

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The tendency to use various composite materials in the production of aircraft components and assemblies determines the relevance of the study of the anisotropic properties of these materials. Ceramic-matrix composites used in aviation rocket and space technology can be assigned certain anisotropic properties already at the production stage. The anisotropy of the material has a significant effect on the thermal characteristics of metal - ceramic-matrix composite contact pairs. This paper presents the results of numerical modelling of the thermal properties of contact interaction with the participation of an anisotropic ceramic matrix composite. It is shown that a change in the orientation of the fibers of the composite matrix with respect to the direction of the heat flux significantly changes the contact thermal resistance.

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Numerical Method for Determining the Real Contact Area of Contacting Bodies

Cited by 6 publications

References 4 publications

Determination of the Contact Area Under Cyclic Loading of Contact Pairs of Isotropic Materials on the Basis of 3d Surface Microrelief Modelling

Determination of the Contact Area Under Cyclic Loading of Contact Pairs of Isotropic Materials on the Basis of 3d Surface Microrelief Modelling

Investigation of the thermal characteristics of a metal-anisotropic composite contact pair

Related problems of designing heat-loaded structures from ceramic matrix

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