Phenomenological model of accumulation of fatigue tribological damage in the surface layer of materials
Fragment książki (Rozdział monografii pokonferencyjnej)
MNiSW
20
Poziom I
| Status: | |
| Autorzy: | Sorokatyi Ruslan, Czerniec Myron, Dykha Aleksandr, Mikosyanchyk Oksana |
| Dyscypliny: | |
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| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Strony: | 3761 - 3769 |
| Scopus® Cytowania: | 20 |
| Bazy: | Scopus | Google Scholar |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| The paper shows that the task of analyzing the strength and durability of the material of the surface layer during friction is a difficult task. The study of the activation characteristics of surface destruction is complicated by the in-fluence on the durability of many simultaneously proceeding synergistic pro-cesses. Based on the analysis of the computational models of fatigue wear under friction, in this work it has been proposed to take into account the presence of two damage accumulation areas and the type of destruction mechanism: the high-cycle fatigue area and the debris layer. Methods for estimating the parame-ters of the durability model for the region of high-cycle fatigue have been pro-posed. The relations of the stress-strain state and the characteristics of the fa-tigue strength ofthe material with the characteristics of the model of material destruction have been obtained. The analysis of the obtained relations showed that any physical impact on the surface, which leads to a decrease in structural heterogeneity and will prevent the development of cracks, contributes to an in-crease in wear resistance. Parameters have been analyzed to determine the du-rability of the debris layer and methods for their determination have been pro-posed. For the coefficient of environmental influence, the relations of the change in the activation energy of the surface layer with regard to the character-istics of the lubricant have been proposed. The obtained results are recommend-ed for analyzing the reliability and durability of friction units of machines under fatigue wear conditions. |
