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- Autors
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Shchukin O. V., Orel O. V., Zibоrov K. A., Shulyak M. L.
- Issue
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Hoisting and transport equipment, 2025, №2(70)
- Pages
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27-36
- DOI
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10.15276/pidtt.2.70.2025.03
- Abstract
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Based on the analysis of the dependence of entropy production on material and tribotechnical parameters, it is established that the wear rate of a sliding bearing in elastic and elastoplastic contact increases with the increase of the surface density of dislocations at low values and decreases with the increase in the region of large values of this value. The equation for the production of entropy in the process of interaction of molecular dipoles of the lubricant with dipoles caused by fluctuations in the surface density of dislocations is obtained. It is shown that the wear intensity caused by this component of entropy production decreases with an increase in the dipole moment of lubricant molecules.
Based on the analysis of the dependence of entropy production on material parameters, it is established that the intensity of bearing wear increases with the growth of the surface of dislocation density. An expression for entropy production in the case of fluctuations in the dislocation density surface is obtained.
It is shown that the wear intensity of the crankshaft sliding bearing of the motor grader DZk-250 in elastic-plastic contact increases with the increase of the surface density of dislocations at low values and decreases with an increase in the range of large values. The equation for the formation of entropy in the process of interaction of molecular dipoles of the lubricant with dipoles caused by fluctuations in the surface density of dislocations is obtained.
- Keywords
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motor oil, contact, sliding bearing, entropy, wear intensity, dislocation.
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