bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ultrashort pulse decomposition in reflection symmetric meander lines of three cascaded half-turns
Authors: Chernikova E B , Belousov A O , Gazizov T R 
Published: November 2019

Abstract
For the first time the quasi-static simulation of the time response of three cascaded half-turns of a reflection symmetric meander line to the excitation of an ultrashort pulse (USP) is performed. It is shown that the output voltage amplitude is determined by the amplitude of the first group of pulses. The possibility of additional pulses in the output signal is revealed. The simulation revealed the possibility of additional pulses at the output signal whose delays are equal to the arithmetic mean values of the pulse delays. The results of the work are useful for improving USP protection devices, inasmuch as the presence of additional pulses opens up further possibilities for more efficient use of such devices as this provides increased attenuation.
V-shaped sliding bearings using micropolar lubricants caused by a melt accounting for the dependence of lubricant viscosity and porous lauer permeability on pressure
Authors: Mukutadze M A , Mukutadze A M , Opatskikh A N 
Published: November 2019

Abstract
The paper presents a method for formation of an exact self-similar solution of the hydrodynamic calculation of a wedge-shaped slip bearing (slide, guide) using a micropolar liquid lubricant caused by a melt of the guide taking into account the dependence of lubricant viscosity and porous lauer permeability on pressure. Based on the system of motion of a viscous incompressible fluid of a micropolar lubricant for the “thin layer” taking into account the dependence of viscosity characteristics of the micropolar lubricant and permeability of the porous layer on pressure, continuity equations and equations for the dissipation rate of mechanical energy, an analytical dependence for the molten surface profile was obtained. In addition, performance characteristics of the friction pair were determined. The influence of parameters caused by the melt of the guide, structural-viscous parameters of the micropolar liquid lubricant and permeability of the porous layer on the bearing capacity and friction force was estimated.
Calculation of sealing joints with elastic edge in PTC MathCAD
Authors: Gozbenko V E , Belogolov Yu I , Kargapoltsev S K 
Published: November 2019

Abstract
The article touches upon the issues of the development of engineering methods of calculating a thin-walled shell-plate seat for valve and flange sealing joints, followed by the formulation of tasks using modern automated calculation software. To achieve the purpose, the authors used Parametric Technology Corporation MathCAD (PTC MathCAD) with subroutines for the search for extremum of functions and the computational block ‘Given - minimize’. The calculation is presented in the form of algorithms consisting of three logically interrelated parts: 1) stiffness calculation; 2) strength calculation; 3) the calculation of rational dimensions. The obtained results of the calculation of geometric dimensions are tested, which eliminates a probable error in the calculated block ‘Given’ of PTC MathCAD. Among the developed engineering methodologies, the article describes the following ones: a method for calculating the rational geometrical dimensions of a shell-plate valve seat, operating under shock loading at an uncertain maximum dynamic load. It ensures that the allowable stresses in a thin-walled shell-plate seat are not exceeded. Another is a method for testing the stress-strain state of a shell-plate valve seat under static loading with a force of sealing and pressure of the working medium. The last one is the method of calculating rational geometrical dimensions of the shell-plate seat of a flange connection, which minimizes the unit stiffness (minimizing sealing force), provided that the shell-plate seat strength is ensured.
Sealing joints with elastic edge
Authors: Belogolov Yu I , Kargapoltsev S K , Gozbenko V E 
Published: November 2019

Abstract
It was cylindrical shell elements that were mainly considered, as technologically simpler ones. The angle of the cone α is usually accepted to be 10-15°, in order to avoid self-braking (jamming) of the loaded sealing joint. The long service life of the sealing joint implies the absence of plastic deformations of the shell element (excluding, of course, the deformation area of the sealed joint, i.e. the sealing line), therefore, usually hardened steel, bronze, forming a wear-resistant friction pair with the spool valve, are used as the material of the shell element.
Kinematic analysis of a planetary mixer mechanism
Authors: Bogdanov V S , Chemerichko G I , Anciferov S I , Bogdanov D V , Kulakov L S , Popovich A V , Karachevceva A V 
Published: November 2019

Abstract
The production of dry building mixtures is currently one of the most promising areas of the building materials industry due to the widespread use of its products. The mixers with a planetary movement of working bodies are best suited among the wide variety of designs of mixers for the production of these products. One of the drawbacks of planetary mixers is the contamination of the planetary gear and the ingress of lubricants into finished products. To eliminate this disadvantage, a protective diaphragm was installed to separate the tank and the drive part. The motion simulation of the rotator was created using the CAD / CAM / CAE system NX.
Accuracy improvement of inertial navigation by special methods of measurements using microelectromechanical systems
Authors: Voyskovskiy A P , Kruzhkov D M , Yakimenko V A , Kartushina N V 
Published: November 2019

Abstract
The article is devoted to the description of algorithmic mechanism devised for increasing accuracy of inertial navigation based on the use of low-priced (up to 1000 usd) microelectromechanical measuring systems installed on small and mini-aircraft. The proposed algorithms include a series of error model parameters updating operations, which are used to negate inaccuracy occurred upon conducting measurements and their further utilization. It is shown that not only the algorithms proposed by the authors are capable to massively increase accuracy of navigation in comparison with the unprocessed initial navigational information obtained from the measuring devices, but also allow using of low-priced microelectromechanical systems for brief autonomous navigation by integrating aircraft reference motion equations.
Modelling of the end effector movement of the SCARA-module taking into account the characteristics of the drives
Authors: Chalenkov N I , Balakin A I , Filipovich O V 
Published: November 2019

Abstract
The functioning of the multifunctional module based on the SCARA type manipulator (Selective Compliance Articulated Robot Arm) is considered, its characteristics and possible areas of use are described. The model, determining the trajectories of movement of the module end effector with known dimensions of its links and specified control moment is developed in MapleSim. Carrying out such an analysis allows planning the movements of the module. The results of modelling for given parameters of module links and prospects for further research are presented.
Assessment and improvement of rationality methods of modern aircraft engines design and technological solution
Authors: Kraev V M , Siluyanova M V , Tikhonov A I 
Published: November 2019

Abstract
The results of the research of modern aircraft life cycle structure are presented. The basic principle of a life cycle system creations is cost minimization requirement of whole aircraft and the components from designing to disposal. The proposed model is based on the analysis of life cycle aircraft by elementary components.
Optical control method of fuel atomization in combustion chambers using high-speed video recording
Authors: Malikov V N , Ishkov A V , Dmitriev S F 
Published: November 2019

Abstract
The article gives the description of the optical method and the high-speed video registration test bed for determining the parameters of fuel atomization in atmospheric conditions. The diagram and operating principle of the test bed are described. The experimental results of the jet parameters when atomizing rapeseed oil and diesel fuel are presented.
Preparation of disinfectant solution for use in agricultural production and processing industry
Authors: Oskin S V , Tsokur D S 
Published: November 2019

Abstract
To improve the ecological purity of agricultural products it is necessary to look for new ways of pest control. Earlier studies show the prospects of using electroactivated solutions – anolytes for bactericidal treatment of bee colonies. The article analyzes the problem of describing main physical and chemical processes occurring during the electrochemical water activation. It is proposed to carry out modeling of electrolysis processes in Comsol software package. As a result of the necessary settings, this package is able to describe the basic physical and chemical processes and obtain solutions with a high level of coincidence with experimental data.
Model of unreliable devices system
Authors: Korolkova L I , Mashrabov N , Panfilov A V , Siuskina Ju L 
Published: November 2019

AbstractThe purpose of the research is to develop a model of a production system consisting ofnparallel devices and having a standby device of lower reliability. Under complex failure conditions, a spare device in a cold standby allows quickly replacing the failed primary unit. The system operation is investigated from the beginning of work up to a certain point in timetW.A good approximation to reality is the acceptance that failure time follows general time distribution. The authored approach consists in drawing up an open scheme for the functioning system. Due to the complex failure of one of the devices, the process passes to the next state, which is characterized by residual failure time or residual time of the process. The calculation of residual durations is a feature of the investigated model, which, along with detailed schematization, makes it possible to calculate the set of state indicators and, on their basis, obtain the more general indicators of the functioning of investigated system. A numerical example is given for a system consisting of five devices.
Measures to the improvement of efficiency of a repair enterprise
Authors: Konyuhov V Yu , Gladkih A M , Semenov V V 
Published: November 2019

Abstract
The article considers work of an enterprise created on the basis of the repair unit of a large industrial complex. It indicates the problems in the organization of the activity of new repair enterprise and the ways of their solution, aimed at the increase of the production efficiency, including those associated with staff motivation.
Verification of the numerical method of phase enlargement of non-regenerating systems on the example of modelling the process of functioning the controlled technical system
Authors: Zamoryonov M V , Kopp V Y , Zamoryonova D V 
Published: November 2019

Abstract
The article verifies the numerical method of phase integration of non-regenerating systems with a common phase space of states by comparing the results of phase integration, made by the proposed method and the classical, known from the literature. The transition probabilities of the enlarged system and the distribution function of the system’s residence times in the enlarged states are compared. The results of modeling the obtained expressions are given.
Algorithmic support of automatic yield control system of a gas well cluster
Authors: Prakhova M U , Krasnov A N , Khoroshavina E A 
Published: November 2019

Abstract
Gas wells operation is associated with the problem of regulating their yield. Debit value must provide for meeting various criteria with some of them being mutually exclusive. Initial debit value is set under a deposit development project and then is adjusted periodically at best based on the results of quarterly hydrodynamic well exploration. However, in order to enhance operation yield of a gas well cluster debit regulation must be carried out in real time. This problem hasn’t been solved yet. The article offers a yield control algorithm for a gas well cluster consisting of three separate units: yield enhancement, yield decreasing and yield distribution among wells. Transfer from one unit to another is carried out based on the results of measuring current gas consumption rate in wells and the pressure on isolation valve building’s plumes. The gap between the allowed values of well consumption (maximum and minimum) is identified on the basis of the research of a well’s operation. Algorithm approbation was carried out in a program package for simulation, design and analysis of the operation of above-ground infrastructure and PipeSim pipeline system. The results confirmed the feasibility of the proposed algorithm and the possibility of managing operation regime of every well independently.
Mathematical model of the vibratory mill body movement with biharmonic oscillations
Authors: Bogdanov V S , Dontsova Yu A , Bogdanov N E , Voronov V P , Malysheva E I 
Published: November 2019

Abstract
Vibratory mills are widely used in various industries such as construction, mining, chemical, energy ones in order to obtain powders with the size of a particle less than 5 microns. Vibratory mills with harmonic oscillations of a cylindrical body are most widely used in world practice. The disadvantage of such mills is the presence of stagnant zones in the central part of the load which reach 40% of the total mass of milling bodies. This significantly reduces the efficiency of the grinding process. In recent years, vibratory mills with two drives have been used. The body of these mills makes biharmonic vibrations; as a result, the volume of stagnant zones decreases to 15–20%. We have proposed a new design of a vibratory mill equipped with two imbalanced vibration drives, the axes of which are shifted in different directions from the horizontal axis of the mill, passing through the center of mass of the oscillating system. This article discusses the method that allows one to calculate the trajectory of the mill body in polar coordinates. This method is contemplated for the first time. The resulting equation of the motion trajectory of the vibromill body takes into account: the geometrical parameters of the cylindrical body; body weight and load; weight of imbalances; eccentricities of imbalances; imbalance angular velocity; the forces created by imbalances; imbalance offset angles; spring stiffness and damping coefficient.
Optimization of material grinding in vibration mills
Authors: Bogdanov V S , Alexandrova E B , Bogdanov D V , Bogdanov N E , Gavrunov A Y 
Published: November 2019

Abstract
In many industries millions of tons of various materials are subjected to fine grinding. It is relevant to improve the quality of final products at minimum power consumption. Vibration mills are widely used to obtain powders with the particle size of the final product of less than 10 microns. Depending on the design of a drive from and the nature of vibrations of a grinding chamber they are divided into mills with harmonic, biharmonic and polyharmonic vibrations. The general disadvantage of such mills is stagnant zones in loading reaching 30% of the grinding body weight. Thus, the efficiency of grinding is reduced. The paper considers a new design of a rotary vibration mill without stagnant zones, which significantly increases productivity and grinding fineness of the final product. It describes the equations that were obtained to calculate the power consumption of a drive and the kinetics of grinding.
Thermal stability of the properties of germanium crystals for IR optics
Authors: Shimanskii A F , Gorodishcheva A N , Kopytkova S A , Kulakovskaya T V 
Published: November 2019

Abstract
Both Sb-doped Germanium and Ge-Si solid solution single crystals with resistivity from 1.5 to 7 Ω·cm were grown using the Czochralski method. The optical transmission of single crystals and the stability of their optical properties were studied by infrared Fourier spectroscopy at a wavelength of 10.6 μm and temperature range from 25 to 60 °C. It was found that decreasing the background impurities concentration leads to the reduction of the infrared absorption at room temperature while not affecting the thermal stability of the optical properties. Thermal stability of the optical properties of Sb-doped germanium single crystals increases by adding from 0.2 to 0.8 at % of silicon.
Methods of graphitized steels obtaining
Authors: Guseva E A , Konstantinova M V , Kargapoltsev S K , Gozbenko V E , Sivtsov A V , Karlina A I , Shtayger M G 
Published: November 2019

Abstract
The article presents the analysis of various methods for the production of steel with inclusions of graphite. The article demonstrates the effect on the process of graphitization of alloying elements, various types of heat treatment, crystallization by a pulse-continuous method.
Lamé problem for a multilayer cylinder made of nonlinear elastic materials under finite strains
Authors: Zingerman K M , Ryabova O A , Muhin D D , Kaplunov I A 
Published: November 2019

Abstract
The paper presents an approach to the numerical-analytical solution of the Lamé problem for a multilayer cylinder made of nonlinear elastic materials under finite strains. The dependence of the stress state of a cylinder on its inner radius after deformation is investigated and nonlinear effects are analyzed.
Group growth of polycrystalline diamond coating by MPCVD technique on a hard alloy tool with a thin blade
Authors: Ashkinazi E E , Popovich A F , Yurov V Yu , Sedov V S , Sovyk D N , Sergeichev K F , Rogalin V E , Konov V I 
Published: November 2019

Abstract
A coating technology for application of hardening of diamond coatings on carbide tools for treatment of mineral fiberglass based on quartz texture with chromate-phosphate cohesive (FQTCC) is proposed. The purpose of this development is to increase the edge strength of the tool. The use of the technology described above allowed, in comparison with the cutter without diamond coating, to increase the productivity of processing by 11.5 times, by cutting speed by 2.3 times, and by the minute supply by 5.0 times. The approach is based on changing the configuration of the microwave field when applying a diamond coating on hard alloy substrates in the microwave plasma of the ARDIS-100 reactor by using specially designed plateholders. This method allows for the group coating on several substrates in a single process. A simplified mathematical model for calculating the temperature of the top of the cutter during the growth of a CVD diamond film, taking into account heat transfer through thermal conductivity and radiation, has been constructed. Temperature distribution on the surface of a tungsten carbide cutter in the temperature range optimal for diamond growth was constructed. The difference between the average (experimental) and maximum (calculated) temperature in such a cutter was from 80 to 138°C.
Directional coupler on compact structures
Authors: Hung L Q 
Published: November 2019

Abstract
This article describes a miniature directional coupler design with two connected loops and a central operating frequency of 2 GHz. The dimensions of such a coupler have been reduced with the help of compact structures, which, in turn, reduces the cost of material. Thus, the splitter with a central frequency of 2 GHz takes only 341 mm2, which is 45% less than the traditional design at the same frequency.
Simulation of the stress-strain state of the combined rolls plates in the form of a Reuleaux Triangle Profile roller grinder
Authors: Krivov D A , Gordeev Y I , Krivova D D , Chzhan E A 
Published: November 2019

Abstract
This paper aims to provide specialists with the main principles of work and stress-strain state of the combined rolls plates in the form of Reuleaux Triangle Profile (RT-profile). The paper is devoted to the problem of the flow pattern of force in the material cutting zone, the kinematic-geometric characteristics, the working principles of the combined rolls and the stress-strain state of the rolls while material grinding. The additional effect of rolling is implemented in the grinder with combined rolles in a form of Reuleaux Triangle Profile while moving crushed material in at least two coordinates of the gap, also the effect of crushing and cutting is realized in the field of a cross gap between combined rolls plates, due to crushing efficiency increases (will increase). Reuleaux Triangle profile of combined rolls plates provides even load distribution.
Application of the information measuring system to improve the feeding mechanism of a roller machine
Authors: Fedotov V A , Medvedev P V , Solovykh S Yu 
Published: November 2019

Abstract
The article describes principles of using the information measuring system that controls a roller machine. The main indicators of efficiency of a roller machine is performance and product quality. A mechanism for feeding the roller mill is crucial when grinding grain. Automatic regulation of technical parameters of the feeding mechanism of roller machines is advisable: at low peripheral speed rates (up to 2.4-2.8 m/s) - by changing the number of revolutions of feeding rollers or the gap value; at high peripheral speed rates (2.4-2.8 m/s) - by changing the values.
Application of the Blaine Apparatus for direct assessment of different suspended mixture filterability
Authors: Beloglazov I I 
Published: November 2019

Abstract
The article is devoted to research work, in which an attempt is made to apply the Blaine apparatus for direct assessment of filterability of different materials. In the theoretical part of the article the main laws linking the Blaine index of the powder material and the average specific cake resistance are described. A number of experiments with materials taken from actual operating plants are carried out. To determine the Blaine-index the laboratory Blaine apparatus is used and standard tests of filterability on the batch pressure filter is used to determine the average specific cake resistance. As a result of processing experimental data and the necessary calculations direct relations between the Blaine-index and average specific cake resistance are obtained.
I-V- Characteristics analysis of betavoltaic microbatteries using TCAD model
Authors: Petrosyants K O , Pugachev A A , Kharitinov I A , Lvov B G 
Published: November 2019

Abstract
The complete analysis of I-V characteristics and set of basic parameters for betavoltaic silicon batteries under Nickel-63 irradiation in the temperature range from 213 to 330 K is carried out using a universal physical TCAD model. The standard TCAD optical generation model was adopted for simulation of electron-hole generation for beta particles irradiation. The pn-junction diode energy converters with real Gaussian doping profiles are considered. The simulated current-voltage characteristics of the 63Ni-Si betavoltaic elements are in good agreement with the measured characteristics.