PUBLISHED PAPERS #07
| George TUMANISHVILI, Giorgi TUMANISHVILI, Tengiz NADIRADZE, Yulbarskhon MANSUROV. Prediction and perfection of tribological properties of heavily loaded interacting surfaces |
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| Abstract. Interacting surfaces of the rubbing elements of various machines often work in the extreme conditions that has a great influence on the machine service life, emergency situations (in transport machines on the traffic safety), energy consumed, preventive and maintenance expenses, pollution of the environment by vibrations, noise and lubricants. Usually, at estimation of tribological properties of the interacting surfaces they are supposed to be known and constant parameters, but as the researches show, the range of their variation is large and difficult-to-predict. Our researches have shown especially high sensitiveness of the surface operational properties towards destruction of the third body existing in the contact zone, which is greatly influenced by its tribological properties and power and thermal loads of the contact zone. In the conditions of destruction of the third body developed by us are expressed kinematic, geometric, power and thermos-physical characteristics of the interacting surfaces and properties of the lubricant. Properties and stability of the boundary layers are expressed by the coefficients ascertained on the base of results of the experimental researches. Were also developed and tested in the laboratory conditions new, ecological, frictional and anti-frictional friction modifiers for steering and tread surfaces of the train wheels and rails. |
| Keywords: interacting surfaces; third body; contact zone; friction modifier |
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| DOI: https://doi.org/10.54381/plmo2023.07 |