DEVELOPMENT OF A METHOD FOR CALCULATING THE ONE-DIMENSIONAL PROBLEM OF PLASTIC DEFORMATION OF THE DEPOSITED LAYER DURING THE RESTORATION OF FLAT SURFACES OF PARTS
Вulekbayeva G.Zh. Кikvidze O.G. Tabylov A.U. Bukayeva A.Z. Suyeuova N.B.
2025National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2025#2025Issue 134 - 46 pp.
Currently, the problem of increasing the operational properties of machine parts and mechanisms operating under variable loads or subject to abrasion is very relevant. Surface plastic deformation treatment using rolling of the surface of parts with steel cylindrical rollers is the most effective way to increase the durability of parts. With this method of finishing and hardening treatment, metal deformation is characterized by a significant influence of strain rates on stresses. This necessitates the calculation of stresses and deformations based on the equation of state of rheonomic bodies. In the article, taking into account Coulomb’s law of friction on the contact surface, the formulation of a one-dimensional problem of longitudinal running-in of a deposited layer by a cylindrical roller is considered. The solution of the problem involves calculating the stress-strain state in the deformation site based on the creep-hardening theory. A numerical solution of a one-dimensional nonlinear problem has been performed and the components of stresses and force factors of the technological process have been determined using modern numerical analysis systems, comparatively general formulas have been obtained for calculating the stress-strain state, pressure and friction forces on the contact surface, forces and moments acting on the roller. The results of the study are applicable in repair production to solve actual practical problems of restoring the operational properties of machine parts.
contact surface , creep-hardening theory , cylindrical rollers , deposited layer , one–dimensional problem , recovery , running-in , stress , stress-strain state , surface plastic deformation
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Caspian University of Technology and Engineering named after Sh. Yessenov, Aktau, Kazakhstan
Akaki Tsereteli State University, Kutaisi, Georgia
Caspian University of Technology and Engineering named after Sh. Yessenov
Akaki Tsereteli State University
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