The article presents the results of the research work within the framework of the state-funded research AP09258862 "Development and research of a multipurpose vehicle". Trends in the development of traction and transport vehicles are considered and ways to further improve their design are indicated. One of the ways to improve the performance of machines is to improve the running system of traction vehicles. The object of the study is a semi-tracked propulsion, which is a combination of wheeled and tracked propulsion. Based on the analysis of the existing designs of semi-tracked propellers, the research team has developed a new design of a semi-tracked propulsion traction vehicle. The description of the mover is given. Also, based on the analysis of mathematical models that reveal the mechanism of interaction of the crawler mover with the base and the nature of the distribution of specific pressures, it was found that they are all designed for a metal-tracked mover and do not take into account such a feature of rubber tracks as their deformability. Later, in the course of research, expressions were obtained that characterize the law of distribution of normal pressure along the length of the support surface of the rubber track. The uniformity of the pressure distribution also affects the performance indicators of the traction transport machine. The normal stiffness of the rubber track has an important effect on the pressure distribution. The article offers expressions for determining the normal stiffness of a rubber track.

https://doi.org/10.48081/AFWF6462

2023

Issue 2

The analysis of trends in changes in the parameters of the diesel engine lubrication system during operation from quantitative and qualitative positions is carried out. Taking into account the exponential dependence of the gap on the operating time, the dependence of the oil pressure on the operating time is obtained. As a result of mathematical processing of experimental data, the dependence of the pressure in the lubrication system on the operating time of engines for KamAZ-740 and YaMZ-236 cars was determined. The calculated-analytical and experimental studies have shown that the thickness of the oil layer decreases exponentially depending on the operating time. Mathematical processing of the experimental data allowed us to determine the parameters of this dependence for the KamAZ-740 engines. Three stages of friction are given, based on the conditions of interaction of the micro projections of the conjugate surfaces. At the first stage, up to the thickness of the oil layer of at least 20 microns, a favorable regime of liquid friction is observed with a very low probability of contact. At the second stage, when the TMS value is from 20 to 15 microns, the probability of contact of the micro-steps increases and semi-liquid friction is observed. At the third stage, at h < 15 microns, the probability of contact of micro-protrusions increases significantly, which can lead to the rotation of the inserts. Reducing the oil viscosity increases the likelihood of hydrodynamic friction in the interfaces. One of the important controlled parameters of the lubrication system is the oil level in the crankcase. However, even at the same level, the quality indicators can vary significantly. This should be taken into account when developing systems for on-board diagnostics of diesel engines.

https://doi.org/10.48081/AZVS9571

2023

Issue 2

The article presents the results of studies conducted at various enterprises of the country that widely use tire punching machines, as well as a study of the consumption of tooling on these machines. This research has been funded by the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan (Grant No. AP19578884 “ Increasing wear resistance and improving the design of the tool of the busbar punching machine”. The analysis of the nature of wear of percussion instruments in accordance with the operating conditions was carried out. Part of the research was carried out by the finite element method in the Deform 3D, Siemens NX packages in order to identify the causes of tool breakage. Modeling the process in modern specialized software packages made it possible to see an increase in tensile stresses and an increase in deformations at the site of wear or breakage in real production. Analyzing the preliminary simulation results, we can conclude that it is possible to change the design of the punching tool and select the optimal process modes. The results of the study showed that the tool used to punch holes in busbar wears out quickly and often fails. The worn tool is replaced by a new one purchased from foreign manufacturers. Tooling costs are very high and have a negative impact on the cost of production. The results of modeling carried out using special computer systems also showed that the punching tool works in very difficult conditions

https://doi.org/10.48081/RJUO1188

2023

Issue 2

This article presents an improved technology for the production of meat products using recycled raw materials. The article presents theoretical and practical arguments for the development of delicatessen meat products. During the study, it was found that the use of secondary raw materials can significantly reduce the amount of waste and reduce the negative impact on the environment. However, in the production of meat products from secondary raw materials, technological and sanitary problems arise that need to be solved. Experimental studies of physico-chemical, organoleptic parameters, as well as the nutritional and biological value of raw materials and finished products are presented. Experimental studies have shown that the improved technology of meat product production improves the amino acid balance, vitamin and mineral composition, as well as the functional and technological properties of the finished product. One of the main directions of improving the technology of production of meat products from secondary raw materials is to improve its quality. For this purpose, modern technological processes are used, which allow preserving vitamins and nutrients, improving the taste, aroma and texture of the product. In conclusion, it is emphasized that improving the technology of production of meat products from secondary raw materials is an important task for modern industry. It is noted that the use of the latest technologies and innovative methods of product quality control will make it possible to create safer, environmentally friendly and high-quality products.

https://doi.org/10.48081/HSYT4376

2023

Issue 2

By examining well completion issues, the paper will demonstrate the importance and beneficial effects of using multi-stage selective acid treatment technology to regulate reservoir development. The original goals for the Karachaganak field were a review of the field's operating conditions, the building of the first plant for producing gas and gas condensate, and the design of the production circuit. After the separation of products contract was signed, new goals were added, such as accelerating oil well commissioning, increasing gas condensate production over the long term, and pumping at least 40% of the gas back into the layer. Numerous well completion techniques have been improved thanks to technical developments, including applying tubing while sealing metal-to-metal threaded connections, omitting the use of a circulation valve above the packer, and utilizing a downhole shut-off valve. The field development project's Phase 2M got under way in 2003. An innovative well completion technique was used in the Karachaganak field, which used acid fracturing in an open hole with packers and circulation valves to separate the intervals. In 8 horizontal wells, the multistage stimulation approach has proved effective, saving both time and money. In one of the wells, selective stimulation was made achievable by an acid treatment plan that met zonal injectivity standards. Increased well productivity, flow distribution, gas, water, and drawdown control have all been benefited by multistage selective acid stimulation.

https://doi.org/10.48081/CPMA2427

2023

Issue 2

Currently, there is a strong deterioration of technological equipment in the industry, since accidents have become more frequent, therefore, it is urgent to ensure the safety of operation of responsible welded structures. Technological equipment, in addition to machine tools and transport, also includes overhead cranes, which are the main link in the transport chain, not only the normal implementation of technological processes, but also the safety of personnel depends on the technical condition of the overhead crane. During the operation of cranes, power equipment and welded metal structures are subject to wear, most of which have expired their standard service life. After a comparative analysis of various bridge cranes, beam structures, observation of their working processes led to the conclusion that they have deformation during welding. In the course of the literature review, the types of welding for the bridge crane were identified, and how to solve the actual problem. For bridge structures, electric arc, semi-automatic welding machines are used to change to submerged welding. Research has shown that submerged welding is the optimal solution to these problems. This article presents the development and analysis of welded bridge structures, analysis of the strength parameters of the welded joint using Ansys Workbench.

https://doi.org/10.48081/MBPF9114

2023

Issue 2

This article deals with the introduction of modern systems and methods of modeling technological preparation of production. The aim of the article is to propose optimal approaches to the modeling and research of technological preparation of production in order to improve the efficiency and competitiveness of enterprises. The results of the study can be applied both in scientific papers and in the practical work of engineers and specialists in production preparation, as well as in educational programs. The object of the research is the nose fairing of a wind turbine (coca) of a wind power plant. The process of nose fairing design is considered. Computer aided design (CAD) systems will be used in the design of the nose fairing: KOMPAS 3D, SolidWorks. Associative design method of 3D-models will be used. The analysis of aerodynamic resistance of the nose fairing of the wind wheel will be carried out. The use of CAD programs will automate, simplify and reduce the cost of designing parts, units, machines. The solution of the problem is to determine the dependence of the basic diameter of the nose fairing of the wind wheel on its length and the influence of geometrical parameters on the aerodynamic resistance. The results obtained from the analysis of the part on aerodynamic drag should help in solving the issues of design and construction of parts of wind turbines.

https://doi.org/10.48081/KJEL1272

2023

Issue 2

The ecology of the city depends on many factors. Such factors include congestion. Congestion negatively affects the ecological and economic condition of cities and megacities. To solve this problem, a new design was developed to combat congestion – a mobile overpass. The design is used to eliminate traffic jams on the roads. The article describes the structure. The design consists of two main modules. The article discusses the assembly of the structure. The height of the structure allows passenger buses to pass under the structure. The width of one module in one direction is 3.5 m, which ensures the width of the car. The design allows you to increase the intensity of traffic at the intersection during rush hours or during any crowded events. The issues of calculation and construction of a mobile overpass were considered. Finite element and finite difference methods were used to calculate the design.

https://doi.org/10.48081/HUTD7609

2023

Issue 2

With regards to storing thermal energy, latent heat storage are the matter of growing attention over the past years due to their straightforward design, affordable production and maintenance costs, as well as universal applicability. The phase-change materials (PCM) are well-known for their widespread use in aforementioned systems primarily because of their high thermal storage density. Many studies concerning analysing and optimising the design of latent heat storage systems (LHHS) have been carried out in the last years. In relatively recent researches, different research teams have investigated different types of LHHS, using mathematical models of different levels of complexity. The wide variety of different approaches to the mathematical modeling (including different methods, algorithms and applications from different field of pure and applied research) sometimes make it challenging to choose and implement a proper system of equations and criteria without excessive complicacies. This very paper describes and elaborates on the system of equations that can and will be applied to the mathematical modeling of charging/recharging process in PCM-based LHHS for commercial vehicles. After a brief review of previous models, author presents the model and asses its accuracy and possibilities for further development and exploration.

https://doi.org/10.48081/JFBH2786

2023

Issue 2

В данной статье были представлены результаты научных исследований по производству мясного продукта функционального назначения с использованием животного и растительного сырья. В настоящее время особую актуальность приобретает разработка продуктов питания нового поколения, что связано с недостаточной обеспеченностью населения жизненно важными нутриентами. Для производства таких продуктов необходимо проведение комплекса технологических, физико-химических, микробиологических и других исследований. В статье приводятся теоретические и практические доводы по разработке продукта питания нового поколения, а также представлены данные экспериментальных исследований, математического моделирования рецептуры мясного продукта, органолептических показателей, пищевой и биологической ценности сырья и готовой продукции. Проведенные научные исследования показали, что сочетание животных и растительных компонентов в производстве функционального мясного продукта показательно улучшает аминокислотный баланс, витаминный и минеральный состав, а также функционально-технологические свойства готового продукта питания. По результатам научных исследований можно сделать следующий вывод, что для обогащения мясных продуктов можно использовать широкий диапазон функциональных ингредиентов, в том числе в виде натуральных ингредиентов, в которых содержатся необходимые биологически активные вещества.

https://doi.org/10.48081/YHEW5190

2023

Issue 2