bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis of parameters of elastic-damping devices to reduce the dynamic loads of mining machines based on the concept of inverse dynamic problems
Authors: Kuznetsov N K , Iov I A , Iov A A 
Published: February 2021

Abstract
The article is devoted to the issues of reducing the dynamic loads of mining machines using elastic-damping devices built into the mechanism. It presents the results of research that determines the parameters of these devices based on the solution of the inverse dynamic problem for a given low of change of elastic force in the cable of the excavator traction mechanism. It is shown that the use of this synthesis method allows us to obtain optimal values of the design parameters of such devices that fulfill several contradictory criteria of the quality of the transition process, determined by the desired low of change of the force in the cable. Using the example of a two-mass electromechanical system that simulates the dynamic properties of a dragline traction mechanism equipped with an elastic-damping device, the procedure of the synthesis of the proposed parameters is described and the results of a numerical study of its efficiency are presented.
Development of the production monitoring system based on the Industrial Internet of Things platform
Authors: Mikhailov A B , Tretyakov S D , Andreev Y S , Medunetskiy V M , Aung Thinn Ko 
Published: February 2021

Abstract
The article is devoted to the results of integrating the industrial Internet of things platform and industrial production into a digital environment. The architecture of a data collection system is shown and ready for its implementation on the PJSC Techpribor and the laboratory of ITMO University. Firstly, we prepared the methodology for modeling three-dimensional scenes and the methodology for generating equipment data models. These methodologies are for the Winnum Industrial Internet of Things (IIoT) platform. Secondly, we indicated the main stages of Winnum platform integration into the enterprise information system in the framework of the described methodology.
Models for representing limit states in geomechanics
Authors: Mikhailov A V , Zyuzin B F , Zhigulskaya A I 
Published: February 2021

Abstract
A new paradigm of scientific knowledge enabling to display the ultimate stress-strain states in geomechanics is presented in the article. In this case, distortion serves as a natural science theory. The main results concerning the development of distortion theory in natural systems are presented. Geometrical models for representing limiting states and determining distortion invariance during the materials deformation are shown. The format for forming a “strength certificate” of organic mineral soils for solving power and energy problems in the design of executive working bodies of mining machines is given. The technique for representing deformation processes in a reduced square system is described. The proposed methodology and criteria for the stress-strain state are a further development of the E.I. Shemyakin’s synthetic theory of strength. Areas of mutual influence of the main parameters of the soils strength certificate are as follows: specific adhesion and angle of internal friction and their compliance with the experiments of Buisman. The universality of the models under consideration is shown. This enables to give a mathematical description of the limiting parameters and criteria of stress-strain states in an invariant form and a clear geometric mapping.
Modeling laser head housing and engineering by analyzing walls rigidity in CAE-systems
Authors: Nikolaev A D , Pompeev K P 
Published: February 2021

Abstract
The paper considers a possible way to expand the technological capabilities of numerically controlled machines by upgrading and integrating a fiber laser system into their composition. An important task is to facilitate the details of laser head housing while maintaining their stiffness parameters. To achieve the aim of the research, the laser head body was completely redesigned, some structural elements were combined, and all the walls of the body became lighter and more functional. The new design will be much more convenient to use while maintaining the same rigidity. The new laser head housing will make it possible to expand the range of work for numerically controlled machines, which in turn will lead to a reduction in the production time of not only one product, but also the final product as a whole. This approach will reduce the cost of maintaining and maintaining a large number of equipment, since the integration of laser equipment into numerically controlled machines will reduce the number of equipment in the workshops. In addition, marking and manufacturing parts on the same machine will not only significantly automate the processes of further Assembly of the final product by applying QR codes, but also will increase the accuracy of marking and engraving on the product due to a one-step process.
Analysis, topology modification and modeling of the laser head casing taking into account the capabilities of additive equipment
Authors: Pompeev K P , Pyae P A , Vasilev O S , Gorny S G 
Published: February 2021

Abstract
The article considers the issue of improving the design of the laser head casing in order to ensure its compactness and take into account the capabilities of additive equipment that allows making more complex plastic casing parts without violating the collectability and maintainability of the laser head casing. The manufacture of a laser head casing made of plastic makes it possible to reduce its material consumption in comparison with a casing made of aluminum alloy. At the same time, it is proposed to further reduce the material consumption of the plastic casing due to the introduction of special recesses and stiffening ribs into its design. In the CAE-module of the CAD/CAM-system SolidWorks, a comparative analysis of the strength and stiffness of the laser head casing design options, assembled from parts with recesses and stiffeners, as well as without them. The modeling results of the deformation process for the casing variants convincingly showed that it is possible to replace the material of its parts from aluminum alloy to plastic and that reducing the material consumption and changing the design of the casing does not lead to such a loss of its strength and rigidity which causes an unacceptable deviation of the laser beam from the vertical, that is, does not affect the functioning of the laser head.
Manifestation of the “striped heating” effect in numerical simulation of induction heating of ferromagnetic bodies near the Curie point
Authors: Chmilenko F V , Rastvorova I I , Yermekova M R 
Published: February 2021

Abstract
For the first time, the effect of “striped heating” in the induction heating of ferromagnetic materials is mentioned in the works of Soviet scientists Lozinski M.G. and Babat G.I. in the mid-20th century. They tried to give a physical explanation for the “striped heating” and expressed fears that the phenomenon might limit the use of induction hardening. However, in the practical use of induction heating in most cases, there was no significant influence of this effect on the process. In this regard, the “striped heating” was not actively discussed by the scientific community and was not sufficiently researched. The discussion on this issue was resumed by prof. Dzliev S. V. In the future, prof. Nemkov V.S. tried to gather all the available information about the “zebra effect” (as he called this phenomenon) and summarize it. This article continues the discussion about the effect of “striped heating”, and its manifestation in numerical modeling of induction heating of ferromagnetic bodies. A special case of the effect of “striped heating” in blackout induction heating with discrete overflow is given.
The modeling and analysis of the parameters of the non-sinusoidal modes
Authors: Sychev Yu A , Prokhorova V B , Aladin M E 
Published: February 2021

Abstract
The article is devoted to the analysis of the parameters of the non-sinusoidal modes. These parameters include the components of the total apparent power in the presence of the voltage and current harmonics such as the voltage distortion power, the current distortion power, the harmonic distortion power, the fundamental apparent power. These components should be used to determine the primary source of the non-sinusoidal mode formation during the proper selection of the filter devices. For this purpose the five ways of non-sinusoidal mode formation are detected and for each of them the mathematical model has been created. The dependences of the total apparent power components changing under the variation of non-sinusoidal ways are determined by means of the mathematical modeling. These dependences should be considered as the theoretical basis for the choosing and proving of the type and structure of the filter device as the part of the automated power quality control and improvement system and also for the tuning of the parameters of the existing filter devices to improve their performance.
Modeling of the process of mechanical dehydration of raw peat materials in the working tools of mining machines
Authors: Ivanov S L , Khudyakova I N , Vagapova E A , Ivanova P V 
Published: February 2021

Abstract
The results of physical modeling of primary dehydration of raw peat materials of the disturbed structure in a thin layer and at excavator bucket digging directly from the watered deposit at peat quarry development are presented. The areas of rational application of mechanical moisture dehydration of raw peat materials are shown, which allow assessing the quality of extracted raw peat materials and products of its processing. By results of the carried out modeling of process of moisture reduction concrete recommendations on size of the basic parameters of working bodies of mining machines are given. In particular, the sizes of press pallets for a gravitational press of primary peat pulp dehydration are selected, the rational size of a column of pallets providing the set parameters of quality of a product of processing directly on board of quarry is revealed. Modeling was carried out and on its basis recommendations on selection of parameters and design of excavator bucket, for mining and primary dehydration of excavated raw peat materials of different compaction degree were given. The presented approximated curves of the dehydration process in the bucket allowed to clarify the parameters of the mining excavator bucket ensuring the specified quality of raw peat materials at the first stage of its extraction and processing.
Improving the efficiency of the use of photovoltaic stations in the republic of Cuba
Authors: Iakovleva E V , Guerra D D 
Published: February 2021

Abstract
This article is devoted to the study of the reasons for the low efficiency of solar generators in the Republic of Cuba. The work provides one of the possible technical solutions to this problem. The introduction of new technological solutions requires an integrated approach that evaluates the possibility of applying more efficient technologies for capturing sunlight in specific climatic conditions of the country, as well as evaluating the economic benefits of a particular solution. Therefore, this article discusses the existing problem of low efficiency of solar power plants, due to the absence of any tracking systems for the sun. The paper presents ways to solve this problem. Also, the paper presents a model of a photovoltaic solar system generator developed in the Matlab Simulink software, which makes it possible to study the main electrical variables of the complex. The experience gained in the course of the study presented in this paper can be applied in similar studies in Russia.
Augmented reality technology as a tool to improve the efficiency of maintenance and analytics of the operation of electromechanical equipment
Authors: Koteleva N I , Zhukovskiy Y L , Valnev V 
Published: February 2021

Abstract
Today the industry is facing a shortage of skilled workers and an aging workforce, which will eventually lead to a loss of knowledge. But augmented reality technology can connect field workers with experts who are able to provide remote guidance in real time. The subsequent advantage is that the information obtained by AR devices can be used as accumulated successful experience in the future, which facilitates decision-making in specific business processes of the company. With AR, employees gain experience and skills much faster. This paper shows the application of augmented reality technology in the maintenance of electromechanical equipment. The main functions of the augmented reality system for servicing electrical equipment are presented, the solution to the problem of integrating an augmented reality software application with existing automation systems is shown, and the methods of interaction of the developed software module with third-party modules, for example, various analytical modules, etc. are described.
Influence of grid-orientation effect on modeling of Iraqi oil field: case studies
Authors: Hamd-Allah Sameera M. , Qader Raad Shakor , Zeinalabideen Mohammed Jawad , Tomskaya V F , Vaganov E V , Al-Bayaty Hussein 
Published: February 2021

Abstract
Reservoir simulation models are utilized by oil and gas companies with a purpose to develop fields. Expansions and improvements in simulation software have lessened the time to develop a model. Simulating the reservoir aims to realize fluid flow, physical, and chemical procedures happening in a hydrocarbon reservoir adequately well for the reason of improving hydrocarbon recovery under various working stipulations. Grid-orientation effects are complicated problem in numerical reservoir simulation. These influences were coming when utilized of numerical utilization mechanism to conditions characterizing physically inconstant displacement procedure. These impacts happen in an assortment simulation of inappropriate and favourable mobility ratio displacements. The current study presents a building static and dynamic model and suggests a development plan for the reservoir under study and change the orientation of the grids to examine the effects of these changes on the values of oil production rate, water cut, pressure, cumulative oil production, and recovery factor. The case studies for an Iraqi oil field which is located in the South East of Iraq. Different values of recovery factors were obtained when the orientation of the grids had been changed.
Comprehensive assessment of factors determining electricity load curves concerning enterprises of mineral resource sector
Authors: Ustinov D A , Khomiakov K A 
Published: February 2021

Abstract
The efficiency of enterprises run in the scope of the mineral resource sector is largely determined by the effectiveness of a power supply system. Therefore, the article sets out to supplement a new information database containing the source data basing on a mathematical model of the random process. A brief description of the mathematical model of the random process that defines normalized correlation functions and its parameters at the level of individual energy consumers is presented. A feature of the study is that consumers are considered with and without a variable speed drive. Quantitative data on the difference in the parameters of the same consumers are presented both with and without regulation. It is concluded that it is relevant to supplement the information database.
Mathematical modeling of mass, heat and fluid flow in a reverberatory furnace for melting nickel-containing raw materials
Authors: Sharikov Y V , Quiroz Cabascango V E 
Published: February 2021

Abstract
The article presents analytical results on the use and distribution of energy in reverberatory furnaces with medium pressure gas burners to melt nickel-containing raw materials, by means of a numerical simulation of the furnace’s combustion space. The combustion flow and radiation of a reverberatory furnace powered by natural gas have been calculated and validated. The chemical composition of natural gas makes it the cleanest of fossil fuels, for this reason its use increases worldwide. The higher hydrogen/carbon ratio in its composition, compared to other fossil fuels, causes combustion to emit less CO2 per unit of energy produced. The flue gas outlet duct and medium pressure burners are represented and located as in a typical design to determine the effect on the efficiency of the reverberatory furnace. The results show the temperature field, the mass fraction of oxygen and fuel within the furnace’s combustion space and the comparison between the theoretical and practical efficiency of a furnace.
The use of esters as an inhibitor to prevent asphalt-resinous paraffin deposits
Authors: Galiullina I F , Nosirov D S 
Published: February 2021

Abstract
This article discusses the problem of asphalt-resinous-paraffin deposits in production and tubing pipes. As a rule, these deposits help to reduce the debit of the well with the subsequent failure of the sucker rod or electric centrifugal pumps that are installed at the wellhead. For this reason, the fight against asphaltene-resinous-paraffin deposits is an urgent research task. We considered the chemical method of exposure to asphaltene deposits, in particular with the use of esters, which are part of inhibitors. Today, a wide range of varieties of inhibitors is known that are used as substances that slow down physicochemical processes; the word inhibitor itself comes from lat. “Inhibere”, which means “delay, slow down”. Of the currently available inhibitors, an ester-based inhibitor has been proposed that can be used initially to prevent the accumulation of asphaltene deposits.
Optical and electro-optical properties of Tl1-xCuxGaSe2 (0 ≤ X ≤ 0.02) crystals
Authors: Matiyev A Kh , Uspazhiev R T , Gachaev A M , Khamkhoev B M , Matieva T A , Katsiev R M , Bagov A M 
Published: February 2021

Abstract
The anisotropy of the refractive index and the electro-optical effect in Tl1-xCuxGaSe2(0≤X≤0/02) crystals were studied. Refractive indices were shown to rise as they approach their own absorption band. The electro-optical effect in TlGaSe2 crystals was studied. It was shown that the EO effect in the case where the light and external electric field are directed along the “C” axis within the studied electric fields (up to 5 kV / cm) is quadratic. The quadratic EO effect for TlGaSe2 equals 1.3 · 10−9 CGS units. It was found that when the electric field is directed perpendicular to the “C” axis and the light is directed along the “C” axis the EO effect is linear. The results of the EO measurements are consistent with the fact that the TlGaSe2 compounds crystallize in a monoclinic lattice, with the space group Cc, but at the same time the TlGaSe2 crystals have higher symmetry than Cc.
Theoretical basis for constructing special codes for a noise-resistant downhole telemetry system
Authors: Tyncherov K T , Mukhametshin V Sh , Rakhimov N 
Published: February 2021

Abstract
The important task of efficiency improvement of oil reserves management is to obtain reliable and sufficient information based on well testing data. The paper studies the issue of converting binary convolutional codes to non-binary narrowed cyclic codes. The authors believe that the introduction of special coding makes it possible to significantly increase the noise resistance of downhole telemetry system due to the ability of the code to detect, localize and correct errors that occur during digital processing of downhole information. The developed mathematical model of the formation of a convolutional code is the basis for study the correcting capabilities of a computing system during digital signal processing.
Integration of electric and magnetic fields near wells
Authors: Gallyamov I I , Yusupova L F 
Published: February 2021

Abstract
The authors propose the method for studying electric and magnetic fields near oil and gas well. The determination of the electrical parameters of the soil near well allows choosing the optimal method of electrical protection. This is especially relevant in the presence of a “black insert” extending from a well. The results of the study and the adoption of an appropriate technical solution allow extending the period of trouble-free operation at the “black insert” section. The pipeline condition is monitored by pipeline magnetometry.
Improving accuracy and technology for manufacturing tricone roller bits
Authors: Khabibullin M Ya , Suleimanov R I 
Published: February 2021

Abstract
As a result, the control of the process of basing a roller bit in a chuck was experimentally tested and introduced into production by measuring the gap between the working surface of the restrictive ring and the calibrating surface of the cone in order to increase the accuracy of drill bit manufacturing. Bits with a diameter close to the lower limit value can be machined in a chuck with a restrictive ring of reduced diameter. Height differences of the cones are reduced by introducing into the production the method of group interchangeability of sections in height, measured in a direction parallel to the axis of the bit.
Creation of an suspended compressor for oil production from wells
Authors: Mingulov Sh G , Mingulov I Sh 
Published: February 2021

Abstract
The performed analysis of the design of suspended compressors used in the Republic of Tatarstan and the Orenburg region showed an insufficient degree of compressor pressure increase due to the presence of “dead” space in the compressor cylinder. The study developed a new design of suspended piston compressor for gas extraction from the annular space of the well and its injection into the discharge line, which allows increasing the degree of gas pressure increase by oil filling the gap between the piston and cylinder. The authors elaborated theoretical bases for calculation of hydraulic resistance to piston movement in the oil-filled cylinder of a piston compressor, which showed significant resistance due to small gaps between piston and cylinder.
Research of the Penetration Process of the Frontal Plow
Authors: Mamatov Farmon , Ergashev Ismoil , Mirzaev Baxadir , Pardaev Xofiz , Chorieva Dilsabo 
Published: February 2021

Abstract
The aim of the study is to study and analyze the process of penetration (deepening) of the frontal plow. Dependencies are obtained for determining the length of the deepening of the serial and frontal plows into the soil. The dynamics of the process of deepening of the frontal plow is analyzed depending on its dynamic characteristics. A differential equation is obtained that characterizes the process of deepening the frontal plow. Theoretical and experimental studies have established that the depth of the frontal plow is significantly affected by the weight of the plow, traction resistance and the relative position of its working bodies. The length of the path of penetration of the frontal plow does not depend on the width of the plow and is 2.0-2.5 m, which is 3-3.5 times less than the path length of a serial plow of equal width.