Modelling of contact interaction by “third body” in tribological problems

Authors

  • V. M. Onyshkevych Ukrainian National Forestry University, 79057, L’viv, General Chuprynka str., 103
  • G. M. Barabash Ivan Franko National University of L’viv, 79000, L’viv, Universytetska str., 1 https://orcid.org/0000-0003-3258-8518

DOI:

https://doi.org/10.17721/1812-5409.2021/3.15

Keywords:

contact, tribology, thermal conductance

Abstract

The variety of factors affecting the thermal conditions of a frictional couple results in complexity of the simulation of this problem. Among these factors, thermophysical (thermal conductivity, specific heat, coefficient of linear expansion of bodies, etc.) and also mechanical ones (elasticity, hardness of contacting bodies, etc.) play an important role. The conditions of friction, wear and heat generation are also determined by the characteristics of the so-called “third body”, i.e., thin near-surface and intermediate layers, the physical and mechanical properties of which differ from those of the interacting bodies, and by the microgeometry of their surfaces in the contact zone. The method of determination of thermal contact conductance in mathematical modelling of contact interaction with considering friction and hear generation by “third body” is presented. Using of modified conditions of heat contact in mathematical model of contact thermoelasticity taking into account of friction and heat generation is proposed. After numerical analysis, the graphs of dependence of thermal contact conductance on the input parameters are constructed and substantial influence of some of them is detected. On the example of one-dimensional non-stationary contact problem of thermoelasticity with heat generation of friction the influence of some physical and mechanical parameters on the temperature and heat fluxes in the contact bodies is investigated.

Pages of the article in the issue: 85 - 88

Language of the article: Ukrainian

References

SHVEC, R. N. & MARTYNIAK, R. M. (1988) Termouprugoie kontaktnoie vzaimodeystviye tel pri nalichii poverhnostnyh teplofizicheskih neodnorodnostey. Mat. metody i fiz.-meh. polia. 27. p. 23-28.

LEVYTSKYI, V.P. & ONYSHKEVYCH, V.M. (1999) Doslidjennia vplyvu vlastyvostey “tretiogo tila” na teploutvorennia vid tertia. Mat. metody ta fiz.-meh. polia. 42(1). p. 82-86.

No 3 (2021)

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Published

2021-12-07

How to Cite

Onyshkevych, V. M., & Barabash, G. M. (2021). Modelling of contact interaction by “third body” in tribological problems. Bulletin of Taras Shevchenko National University of Kyiv. Physical and Mathematical Sciences, (3), 85–88. https://doi.org/10.17721/1812-5409.2021/3.15

Issue

No. 3 (2021)

Section

Differential equations, mathematical physics and mechanics

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