Azov-Black Sea Engineering Institute
Author list of organization
List of articles written by the authors of the organization
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THE STUDY OF THE PROPERTIES OF BEDDING MATERIAL FOR ANIMALS OF THE NORTH CAUCASUS REGION
DescriptionThis article presents the results of moisture-absorbing properties of the bedding material depending on the type, size and time of moisture absorption
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TO THE QUESTION OF MODELING THE PROCESS OF INTERACTION OF THE ELASTIC WHEEL WITH THE SOIL BASE
05.20.01 Technologies and means of mechanization of agriculture (technical sciences)
DescriptionOne of the most important problems facing agricultural production is to increase traction and energy properties and to decrease the deforming effect of wheel propellers of power tractors on the soil. The solution to this problem requires the widespread introduction of computer-aided design systems, which make it possible to predict the towing, fuel, economic, and agro-technological properties of the tractor unit at the design stage. Traction and energy indicators of wheeled agricultural tractors, the level of impact of wheel propellers on the soil are largely determined by the quality of pneumatic tires. The search for the optimal parameters of pneumatic tires, the compliance of tire characteristics with the parameters and operating conditions of the tractor unit, require solving two main problems. Firstly, the development of analytical dependencies describing the process of interaction of elastic wheels with the soil base, depending on the rolling mode of the wheel. Secondly, bringing to the engineering level the methods of calculation and analysis of the wheel propellers and soil system. The work discusses the issues of physical and mathematical modeling of a pneumatic wheel and soil system. It is noted that among the existing approaches to describing the process of interaction of an elastic wheel with soil, it is most preferable to use rheological models that take into account the simultaneous deformation and subsequent restoration of the soil and tire. However, when it comes to the existing models, the formation of the area of the contact patch is associated with a common normal deflection, which is not confirmed by numerous experimental studies. In the present work, the concept of agrotechnological deflection of a pneumatic tire is introduced. The developed model makes it possible to calculate the rut dept, the tangential and radial deformations of the tire, the longitudinal and normal deformations of the base, and the contact pressure under a known normal load on the wheel, wheel rolling radius and speed. We have also presented analytical and experimental dependences of the contact pressure and the rut depth on the size of the agrotechnical deflection
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TO SUBSTANTIATE A VEHICLE SPEED WHEN CONDUCTING HARVESTING OF FIELD WORKS
DescriptionA more efficient use of road transport can be reached both by increasing the carrying capacity of the car and the average speed on the road. Due to limiting the safe load on the axle of the vehicle, a more promising solution is to increase the average speed on the road. Restricting car traffic speed on the roads with asphalt-concrete surface is due to the traffic safety, defined as resistance, steerabililty, vibrations of steering wheels and braking dynamics of the vehicle. The first three factors are influenced by the functional characteristics of the suspension and the state of the road surface. The share of agricultural vehicles mealage on the roads with improved surface does not exceed 65%. Nowadays, 40% of traffic volume and 9% of transport mealage are due to the transportation from the field and to the field. The aim of this work was to study the vibrational load of the load-carrying system and the driver, as well as the vehicle speed during the harvest time. To carry out theoretical research we used mathematical model "vehicle-road" system proposed by V.P. Tarasik. As a result of research we obtained the dependence of the acceleration of the front axle on the vehicle speed. The results showed that the maximum acceleration of the front axle is observed at a speed V = 20 km / h, which corresponds to external influences 1.54 Hz (9.7 rad/sec). The peak values of the vertical acceleration amounted to 5.80 m/s 2. The correctness of the mathematical model was verified by comparing the results of theoretical and experimental research in the mode of uniform motion. The experimental determination of the vibrations of the vehicle sprung mass was carried out using the sound level meter and spectrum analyzer OKTAVA-101 AM, which is equipped with a vibrational pickup AP 98. The given calculations showed that the relative error of the results of theoretical and experimental research is 3.94%, the average value of an error at a confidence coefficient of P = 0.95 is 4.76%, which confirms the correctness of the mathematical model. The studies showed that if the speed is between 14 to 40 km / h, the vibrational load on the driver is from 1.42 m/s 2 to 2.82 m/s 2, that is 2.5 ...3.5 times the sanitary standards set by the requirements of the CH 2.2.4/2.1.8.566 - 96
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TO INFORMATION SYSTEMS DEVELOPMENT FOR A MILK PRODUCTION ENTERPRISE
DescriptionIn this article, we have explained the necessity of creating precise adaptive energy-saving technologies for use on the milk production enterprises. There are defined the main problems that reduce the enterprises efficiency and milk quality. Many of these problems can be solved if there is organized correctly the information flow through the creation of complex programs and databases. Regardless to the size and structure of the milk production enterprises, they have the following main information streams: animal productivity data; information about the herd composition and structure; information about the diet composition; information about the quality of milk and others. For the storage of this information there is a developed database consisting of 66 tables and 10 diagrams. The article includes information on some charts. To meet the challenges of manufacturing processes modeling there was offered a bunch of "Mathematical package - Database Management System." Within the developed automated enterprise management system we have selected MATLAB and MS SQL Server. There are presented models of thermal balance; heat generated by animals; heat loss from the feed coming from outside and so on. We have also grounded the applicability of the structural processes modeling in conjunction with the possibilities of modern database management system that allows you to convert a wide range of energy saving tasks to automated analysis and forecasting. This approach has the modularity and implementation ease, all of which allows you to build complex information systems, which at the same time are easy to change, expand and renovate
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TO THE THEORY OF STRENGTH OF DIESEL ENGINE EXHAUST GAS PURIFICATION OF SOOT PARTICLES
DescriptionThe problem of environmental protection from the contamination by toxic products, contained in the exhaust gases, is one of the most topical in the modern world. Nitrogen oxides and soot particles are the most toxic. Getting into the environment and the human body, they cause heavy chronic disease and significantly impair the quality of animal and plant products. The developed gas purification system SCR, the technology of plasma purification of exhaust gases have not found wide practical applications because of their high value. The study of papers dedicated to reducing exhaust gas toxicity shows that the use of combined means of purification, which usually include mechanical, thermal and catalytic methods of purification, is the most effective. Our work deals with the issue of purifying the diesel engine exhaust from fine particulate matter resulting in the combustion of fuel and oil motor partly. The article notes that the carbon is not magnetic, so the use of a magnetic field acting as an agent for the purification of exhaust gas from the carbon soot particles is impossible. The purification in a centrifugal field requires the creation of structurally complex centrifuges, so it is ineffective. We consider the possibility of purifying the exhaust gases from the soot particles in the electrostatic field. The device presents the collecting electrode, which is shaped as a cylinder, and an axial central electrode, which is mounted on an insulated spacer within the cylindrical body. The study deals with the physical and mathematical simulation of processes occurring in the proposed device of the purification of exhaust gases. The equality of the Coulomb force and the Stoks force determines the magnitude of the electrostatic field strength that is necessary for the purification of exhaust gas from the soot particles. We have identified the desired length of the collecting electrode
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A COMPUTER MODEL OF THE CONSEQUENCES OF AIR-FUEL MIXTURE EMERGENCY EXPLOSIONS
DescriptionIn this article the basic principles of air-fuel mixture explosions and striking factors, such as air-striking wave, gas streams, splinters, flame heat, light radiation and sharp sounds are observed. The calculation technique of the emergency emission consequences which is for a quantitative estimation of air-striking wave parameters at air-fuel mixture explosions forming in the atmosphere at industrial failures is given. The basic structural elements of calculation algorithm are listed. It is supposed partial depressurization or full destruction of the equipment containing combustible substance in a gaseous or liquid phase, the emission of this substance in the atmosphere, the air-fuel mixture cloud formation, the air-fuel mixture initiation (ignition) and the explosive transformation (deflagration or detonation) in the air-fuel mixture cloud. The technique allows making the approached estimation of air-striking wave various parameters and defining the probable degrees of men defeat and building damage at failures with air-fuel mixture cloud explosions. The given technique is developed in C# language in the integrated environment of software Microsoft VisualStudio 2010 working out. The program fragment in which the calculation of dimensionless Px pressure and dimensionless Ix impulse is given
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MATHEMATICAL MODEL OF A MACHINE AND TRACTOR UNIT WITH EDM IN TRANSMISSION OF A TRACTOR
DescriptionThe developed mathematical model of the machine and tractor unit with the elastically damping mechanism in transmission of a tractor is given in the article. The analysis of mathematical model of the arable unit on the basis of a tractor with EDM in transmission showed that the MTU mathematical model can be considered as working
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THE SMALL SIZED UNIT MAINTENANCE MODELING
DescriptionAn integrated mathematical approach to modeling functional and structural parameters of a mobile technical service was observed in the article, and also, we reviewed their technical and economical work indicators. The authors propose evaluation criteria and the structural scheme of small sized units of technical service machines. For the attached unit option a combining service snap method is described and the service cost analysis in comparison with trailed analogues is made
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MODULAR AUTOMATED COMPLEX OF THE SOLAR WATER HEATING PLANT FOR AGRICULTURAL OBJECTS
DescriptionThe article deals with the system, providing automatic control of the solar water heating system with the abilities to store in internal memory and to transmit by the cellular network the information about the conditions of the plant and the occurring failure conditions. The common principles of the building the automatic system with the modular principles are shown. The article solves the issue about the quality of the water supply through the quality parameters which provided by the considered system. The methods of the active and passive loss minimizing of the heat of the water in the tank are shown. The usage of the active loss minimizing system was considered. The block-scheme of the implementation of the automatic system with described abilities are shown. The compulsory and auxiliary blocks of the automatic system are shown. The algorithm of the checking of the water supply quality parameters was presented. The study considers methods of the storing of the parameters of the working conditions of the plant and the occurring failure modes as well as the remote information of the attending personnel by the cellular networks. The advantages of the conducting of the system log are shown. The preliminary calculation of the memory capacity for storing the system log was completed. The advantages of the described automatic system with relation to the constructing, controlling, service and research of the described solar water heating systems are shown
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06.00.00 Agricultural sciences
DescriptionThe process of the presowing seed treatment with alternating electromagnet field of the commercial frequency (EMF CF) 50 Hz is economically efficient. The use of the EMF CF 50 Hz in the unit with ring pole pieces allows increasing the germinating energy and power. The electromagnet seed treatment in the units with ring pole pieces is the perspective process of the presowing treatment which does not make unhealthy influence on the operating personnel. At the presowing treatment one has to take into account three factors; they are the arrangement of seeds in the working chamber, the time of treatment and the seed humidity. In this article the authors recommend to promote the unit consisting of a magnetic circuit with ring pole pieces of the rectangular cross-section, a magnetizing coil and an embedding of the nonmagnetic material in the working chamber which allows to increase the germinating energy of spring barley by 10% and the germination by 6,5%. The addition to crop capacity has run to 7% as a result of the spring barley treatment. We analyzed the parameters of the working chamber of the alternating electromagnetic field source of industrial frequency of 50 Hz, we established the dependence of the rate of treatment on the parameters and modes of installation, which are confirmed by laboratory tests. Long-term field studies revealed that the field germination rate of the seeds of spring barley treated with EMF IF, even under adverse weather conditions, exceeds by more than 8% of the field germination rate of control samples