Article

Article title MODELLING THE DISTRIBUTION OF THERMAL FLUX IN A FACE SEAL
Authors A.V. Smelov, S.A. Danilchenko
Section SECTION I. MODELING AND DESIGN
Month, Year 04, 2015 @en
Index UDC 621.867
DOI
Abstract The paper is aimed at creating applied computational methods that describe the thermal phenomena in a mechanical seal assembly. Working contact part of a given tribological assembly consists of a dual–layer coating: a frame made of steel 65G caused by electrodoping as well as an anti–friction layer based on modified PTFE nanoparticles. We have completed the analysis of the factors affecting the operation of the sealing unit. We have determined a significant effect of physical and mechanical properties of materials and sealing assembly modes of operation (pressure, sliding speed, and environmental influences) on a heat flow. We have formulated analytical conditions of the problem describing the thermal processes. We have adopted an axisymmetric model of temperature distribution with the convective heat transfer. We have compiled a series of formulas that describe the conditions of heat transfer, thermal conductivity and boundary indicators for the elements of a tribological unit. We have performed finite–element modeling to solve the problem taking into account different values: geometrical and physical input parameters as well as initial and boundary conditions for different time intervals. As a toolkit of finite–element modeling we have used ANSYS software. Computer program was developed in APDL macro language using bottom–up simulation technology. The total number of nodes is 2115, the total number of elements is 660. To obtain objective results, we have used elements with a smaller mesh in comparison to the counterbody and the base material. During the calculations, we used computer simulation to determine temperature gradients, the time length of the transient mode and the distribution of heat flow between the parts. As a result, we have drawn a conclusion about the thermodynamic processes at the molecular level in the polymer under the influence of heat.

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Keywords Face seal; thermal mode; polytetrafluoroethylene.
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