Kuban State Technological University
Author list of organization
List of articles written by the authors of the organization
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MECHANICAL GRINDING OF SOLID POWDER MATERIALS
DescriptionThe article is dedicated to the determination of conditions for solid bodies’ fragmentation, providing minimal size of particles by means of their mechanical dispersion through the example of powders of titanium carbide (TiC), cubic boron nitride – borazon (CBN) and boron carbide (B4C). The theoretical and practical aspects of the process of mechanical fragmentation of particles of solid powder materials in ball mill for their further utilization in furnace charge for high-speed gas-flame sputtering of wear-resistant composite materials are examined in the article. Methods of preliminary calculation of minimum allowable size of solid particles of powder materials during mechanical fragmentation, based upon Griffiths’ mechanical theory of rapture using experimental data for hardness of material and its yield are proposed and theoretically substantiated. There we have the results of experiments on mechanical fragmentation of titanium carbide in attritor, boron carbide and cubic boron nitride in centrifugal planetary mill, confirming correctness of theoretical propositions and calculations are set out. Recommendations on mechanical fragmentation of solid powder materials in ball mills are formulated as well
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MYTHS AND REALITIES OF THE 1917 REVOLUTION
Description2017 was declared the year of the "100th anniversary of the Great Russian Revolution", or else it is called the "Great Russian Revolution". Such a message was given to the Address of the President of our country, V.V. Putin to the Federal Assembly of the Russian Federation. The authors in the article rightly and reasonably point out that if the February bourgeois revolution, despite a number of objective reasons, was still the apex, palace take-over, October of 1917 was precisely a revolution, and not some kind of Bolshevik conspiracy. Why a revolution, not a take-over? The authors prove and convince the reader that this was essentially an inter-information socialist revolution, which radically changed the social system and the form of ownership. The article proves that the palace coup, which took place in February and brought "politicians into dress coats" to power, led to the victory of October 1917 due to their inaction and incompetence in the country's political leadership. None of the exciting question: about the war, peace, land, factories and factories, the form of state structure, the Provisional Government was not allowed. Therefore, due to objective and subjective reasons, the victory of the Great October Socialist Revolution broke out
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Description
We have illustrated multiple factor analysis of the dynamic friction coefficient of the friction units in tribosystem and tribounits under laboratory conditions. As the tribosystem we had a model band-block brake with regime parameters of the control handle tension of the brake and brake work. By using the method of the mathematical planning of the extreme experiments, we have obtained functional dependence of the dynamic friction coefficient of the variable parameters in the form of a second-order polynomial, which adequately describe the processes under study. As tribounit at the micro- and nanoscale there was the reference change of the dynamic friction coefficient of the pair "Retinax FC-24A – Steel 35HNL" as a function of surface temperature, the values of which correspond to certain laws, based on the rise and fall of the characteristics of the dynamic friction coefficient. We have made the evaluation of the dynamic friction coefficient on the principle of the superposition with the multiple factor analysis of the following parameters: the process of forced cooling and heating; the processes of the polarization and depolarization in the contact patch of the micropoints of friction pairs; the type of the contacts of the micropoints depending on the work function of the electrons and ions from materials; the formation of primary and secondary structures on the surfaces of frictional contact; the destruction and restoration of the pellicles on surfaces, etc. We have analyzed the results of the studies of changes of the dynamic friction coefficient on the macro-, micro- and nanoscale and we have found the basic factors affecting its value
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MODELING DEEP BAR INDUCTION MOTORS FOR SUGAR FACTORY ELECTRICAL POWER SUPPLY SYSTEMS
DescriptionThe article is devoted to solving the urgent task, which is improving the accuracy of transient simulation modes of power supply systems of sugar factories. The material of the article is exploratory in nature, manifested in the fact that we have studied various mathematical models designed for the analysis of symmetric modes of deep bar induction motors. A number of the provisions of article have scientific novelty, which lies in the approach to the choice of the coordinate system for modeling deep bar induction motors. We have formulated the requirements for transient analysis method for deep bar induction motor. We have developed the mathematical models of high-voltage induction motors in different coordinate systems for the analysis of steady-state and transient modes of operation. Based on double-circuit rotor model of induction motor, an analytical expression for the frequency characteristic of the deep bar induction motor is obtained. As an example, we have calculated and presented real and imaginary parts of the frequency characteristic of the induction motor type 2АЗМ-2000 with slip s = 1. The mathematical models of induction motors allow using mathematical apparatus more efficiently to explore different symmetrical modes of engines. The study proposed to use transients in the power supply systems of sugar factories for the analysis. The authors suggest an approach to modeling, which can also be useful for modeling induction generators
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Description
Fracture geometry depends on stresses and rock properties in hydraulic fracturing operation. Poisson’s ratio imports directly in the calculations related to formation stresses. The most important reason for limiting fracture height is the natural stresses contrast resulting from the differences with Poisson ratios. Without this difference, fracture would have largely uncontrolled height. The goal of this study is mathematical investigation of the effect of Poisson’s ratio on the formation stresses that is necessary to select value of breakdown pressure in hydraulic fracturing operation. In this article, a mathematical model has been coded using “MATLAB” software for prediction of stresses in the various layers. This designed program is able to present both digital and graphical output results for different values of Poisson’s ratio. At the end, stresses exerted on the different layers of the several real oil reservoirs have simulated and breakdown pressures have determined
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MODELING AND DIAGNOSIS OF TRAINING PRODUCTIVITY OF SCIENTIFICPEDAGOGICAL PERSONNEL
DescriptionThe article presents the criteria for the effectiveness of the scientific and pedagogical workers of higher skill levels for the preparation of scientific and pedagogical staff. It is known that the preparation of the teaching staff (PhDs) - one of the most important activities of higher education institutions; Moreover, when the state accreditation of higher education institutions compulsorily taken into account indicators that reflect the impact of training candidates. Also, of course, that the training of the teaching staff (PhDs) - activities that require both high levels of research and pedagogical competence. This means that the results of scientific and teaching staff higher qualification levels for the preparation of the scientific staff - both indicators of research and pedagogical competence; own training of researchers - an area of "crossing" of scientific and pedagogical activity. Unfortunately, the increase in the number of scientific personnel being prepared does not always mean quality growth. Often trained scientific personnel (PhD) not only do not approach the level of competence of its research (the results of research) to the supervisor, and stopped to engage in scientific activities after defending his doctoral dissertation (or engaged at a low level). Therefore, the article authors consider it expedient to propose indicators that reflect not only the amount and timeliness of the research training (PhD thesis defense sometimes occur many years after graduate school), but also the productivity of this activity. From the point of view of the authors, the success of research training only can be considered productive when prepared by the scientific supervisor candidates of sciences are highly qualified scientific personnel, ie conduct high-level research, the results of which are recognized by the scientific community; the same is true of the scientific advice (highly qualified scientific workers - doctors). The practical significance of the study results - in the possibility of objective monitoring of research activity of scientific-pedagogical personnel of higher qualification. Methodological bases of research: a systematic, competence, sociological, and metasystem qualimetric approaches. Methods: modeling, methods of quality control, methods of set theory, relations and graphs. Normative base of research: the Federal Law "On Education" (2012), the federal state educational standards of higher education (2014, 2015). The work was performed as part of research projects "Monitoring of the research activities of educational institutions in the information society" (№ 16-03-00382) and "Modern information and educational environment" (16-36-00048) with the financial support of the Russian Humanitarian Foundation from 17.03. 2016.
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MODELING AND DIAGNOSTICS OF THE RESEARCHER’S SYNERGIC INTERACTION WITH THE SCIENTIFIC COMMUNITY
05.13.10 Management in social and economic systems
DescriptionThe article presents innovative models and methods to diagnose the researcher’s synergic interaction with the scientific community (social mega-environment). It is known that the researcher’s interaction with the social mega-environment has two main directions: scientific collaboration and using the scientific community’s social and cultural potential; the former appears as scientific publications, while the latter appears as scientific citations. It is also known that synergic interaction is the interaction leading to the increase in activity results (according to the “1+1>2” scheme). In the article, the researcher’s synergic interaction is understood as his/her collaboration-based research activity that leads to obtaining the results impossible without this interaction. The theoretical significance of the research results is in the possibility for the further development of the sociology of science, as well as for the further development of the models of the individual’s interaction with the social environment; the practical significance is in the possibility to analyze the factors contributing to the success in the research activity of academic researchers and research teams (i.e. applicable for monitoring the research activity)
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Description
The article has examined the application and found the processes that need to be automated. The advantages of this method of automation of the technical support service are considered. Using the unified modeling language (UML), an information system model is constructed based on the information received. Using the developed model, the method of accounting for channel services and equipment will be automated, as well as the process of interaction with customers
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MODELLING THE KINETICS OF DRYING, DEFORMATION AND MINIMIZATION OF RICE CRACK FORMATION
DescriptionThe article studies the issues of drying, deformation and minimization of rice crack formation according to different parameters of drying modes
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MODELING OF THE PROCESS OF STABILIZATION OF PRESSURE OF STEAM IN THE STEAM BOILER
DescriptionThe article submits a mathematical dynamic model of varying pressure of the steam, depending on fuel supplying in the boilers