Three-dimensional of modeling microgeometry of contact pairs in technical systems

Bykov, L. V.; Ezhov, A. D.

doi:10.1088/1757-899x/709/2/022057

Cited by 4 publications

(1 citation statement)

References 4 publications

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“…The technique developed at the Moscow Aviation Institute [5,6] made it possible to determine the value of the thermal contact resistance (TCR) for contacts of the "solid-solid" class and did not provide for the possibility of taking into account the presence of coatings on the surface in the contact pair. The modernization of the existing technique makes it possible to add the account of the influence of the coatings of the contacting surfaces into the previously developed algorithm for determining the temperature fields in the intercontact zone.…”

Section: Methodsmentioning

confidence: 99%

Numerical simulation of the effect of the coating material of contacting surfaces on thermal conductivity

et al. 2020

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In modern space devices, a significant number of parts and assemblies of various shapes are in contact interaction. Moreover, the materials from which they are made often differ in thermophysical and mechanical properties. When designing such connections, it becomes necessary to be able to reliably carry out thermal and strength calculations, both for the entire structure as a whole, and for individual contact nodes, with the possibility of adjusting their characteristics. As a tool for regulating the conductivity of contacts, the use of coatings of contacting surfaces can be used. Modeling a metal-coating-metal contact pair allows you to optimally select the coating material and its required thickness.

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Section: Methodsmentioning

confidence: 99%

Numerical simulation of the effect of the coating material of contacting surfaces on thermal conductivity

et al. 2020

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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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Effect of radiation on the contact thermal resistance in vacuum

Ezhov

Bykov

Резник

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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The solution to most of the problems of ensuring the operating characteristics of units and assemblies of complex technical objects in a wide range of changes in temperature and mechanical loads is associated with ensuring the conditions of contacting surfaces, i.e. with the solution of the contact problem of determining the thermal and strength state of the connection of parts. This problem is also relevant to objects operated in space in a vacuum, where heat transfer between parts can occur only in contact spots (areas of direct contact of surfaces) due to thermal conductivity or due to radiation in places where there is no direct contact. Obviously, in this case, the total contact thermal resistance consists of the composition of these types of heat transfer, and largely depends on the profile and roughness of the contacting surfaces. An assessment of the effect of reemission on the value of contact thermal resistance when the temperature in the contact zone varies from 200 °C to 800 °C under vacuum conditions can allow a much more accurate prediction of the operational characteristics of the contact pair. In this paper, we compare the effect of reemission on the value of contact thermal resistance under various mechanical stresses.

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Three-dimensional of modeling microgeometry of contact pairs in technical systems

Cited by 4 publications

References 4 publications

Numerical simulation of the effect of the coating material of contacting surfaces on thermal conductivity

Numerical simulation of the effect of the coating material of contacting surfaces on thermal conductivity

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

Effect of radiation on the contact thermal resistance in vacuum

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