Analysis of processes of tribodamages under the conditions of high-speed friction

Sorokatyi, Ruslan; Dykha, Aleksandr

doi:10.3103/s106836661505013x

Cited by 14 publications

(13 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of wear tests of bronze conical specimens with a variable wear spot and two values of sliding velocity were taken as a base. The experimental method for measuring the characteristics of friction was applied in article [8] for examining special features of high-speed friction under conditions of thermal loading and at limited lubrication. The criterion of damping the friction fluctuations proposed in this case is not applicable to the case of viscous friction, where such fluctuations are practically absent as a result of the damping action of a layer of lubricant.…”

Section: Literature Reviewmentioning

confidence: 99%

Contact-deformation mechanics of the interaction of lubricated surfaces

Dykha¹,

Posonsky²

2019

Technium

View full text Add to dashboard Cite

The questions of the influence of the lubricant on the conditions of deformation in the contact of solids are considered. The steel spherical specimen was pressed into a greased and dry metal surface. The microstructures of the structure of the surface layer are studied under various conditions of deformation. The diagrams of the relative deformation of the surface layers are constructed. The mechanism of the formation and distribution of internal stresses for dry and greased contact is described. Experimental studies of the introduction of a moving steel indenter into a lubricated surface have been carried out. The relationship of the deformation mechanisms of lubricated surfaces with their wear resistance is determined.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Contact-deformation mechanics of the interaction of lubricated surfaces

Dykha¹,

Posonsky²

2019

Technium

View full text Add to dashboard Cite

show abstract

“…Wear of surfaces, as a result of the summation of tribological damage, belongs to the class of cumulative damage. As a result of statistical processing of experimental data, the authors of [8,9] analyzed probabilistic models of the phenomenological processes of damage accumulation. It is shown that models based on random processes (Markov`s chains with discrete time and states) adequately characterize the processes of cumulative damage.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The first stage of building the model was the task of discretization of the wear process. Using the impact model [8,9], the wear process is considered in discrete form. Assumptions were made to build the wear model.…”

Section: Building a Wear Model And Identification Parametersmentioning

confidence: 99%

Model of accumulation of tribo damage in high-speed friction

Dykha¹,

Sorokatyi²,

Dytyniuk³

2019

BALTTRIB

View full text Add to dashboard Cite

A model of the wear of bodies at high friction speeds in a probabilistic setting is proposed. The model is based on the thermokinetic theory of destruction of materials. The identification of the parameters of the wear models was carried out taking into account the random nature of the influencing factors. The model is presented in discrete form and adapted for numerical simulation using a step-by-step discrete calculation algorithm. As a result, it was found that the stress state of the surface layer of the parts of the tribosystem and, accordingly, wear significantly depend on the kinetics of the change in the coefficient of sliding friction during the transition from static to dynamic loading. It is proposed to use the kinetics of variation of the coefficient of friction to assess the effectiveness of using methods to increase the durability of tribosystems under conditions of high sliding speeds. As a result of the presented studies, a laboratory experiment was conducted to study the influence of the friction coefficient and relative sliding speed on the wear processes of samples from various materials. Experimental data confirm that the coefficient of change of the coefficient of friction is sensitive to the technology of formation of the surface layer

show abstract

“…Thus, article [1] explored triboprocesses under conditions of high-velocity friction, and paper [2] presented an analysis of friction under non-stationary operating conditions. Paper [3] focused on the questions of optimization of triboprocesses, and article [4] studied triboelectric phenomena during drilling process.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%