Problems of Tribology = Проблеми трибології - 2019 рік

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https://elar.khmnu.edu.ua/handle/123456789/7827

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Перегляд Problems of Tribology = Проблеми трибології - 2019 рік за Ключові слова "contact pressure"

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  • Ескіз
    Документ
    Direct wear-contact task for radial sliding bearing
    (Хмельницький національний університет, 2019) Dykha, O.V.; Babak, O.P.; Dytynyuk, V.O.; Дыха, А.В.; Бабак, О.П.; Дытынюк, В.А.
    The paper presents an approximate solution of the wear-contact problem for a cylindrical sliding bearing. The law of wear is adopted in a dimensionless form, depending on the determining factors: contact pressure and sliding speed. The law of wear also includes: the coefficient of friction, the modulus of elasticity of the material of the bearing, the gap in the bearing and the thermal diffusivity of the material of the bearing. For the calculation, an approximate relationship was used for maximum contact pressures in the bearing. To simplify the geometric dependence of normal wear on the contact angle, the decomposition of trigonometric functions into a power series was used.
  • Ескіз
    Документ
    Modern studies of tribological bearing systems: a review
    (Хмельницький національний університет, 2019) Dykha, O.; Dytynyuk, V.; Posonsky, S.; Zelenska, L.; Дыха, А.В.; Дытынюк, В.А.; Посонский, С.Ф.; Зеленская, Л.И.
    Sliding bearings are one of the important friction points of modern machines, ensuring their long-term operation. Sliding supports determine the accuracy of the executive movements of the working parts of the machines. Creating and researching reliable and accurate sliding bearings is an important engineering issue. This review presents the results of studies of bearings, published in recent years in specialized scientific journals. The issues of creating efficient structural bearing assemblies, including through the use of new hybrid materials and structures, are considered. Much attention is paid to the problem of bearing wear and reducing the coefficient of friction. Separately considered issues of computer modeling of working conditions and design of structures. Considered modern approaches to the calculated evaluation of bearings, the solution of contact problems. This review allows scientists and engineers to do the right task setting when planning further research on bearing tribo systems.