Transport engineering最新文献

{"title":"METHODS TO IMPROVE ORGANIZATION EFFICIENCY OF A TRANSPORT COMPANY BY REFORMING ITS ORGANIZATIONAL STRUCTURE","authors":"A. Tochalnaya","doi":"10.30987/2782-5957-2024-1-53-63","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-1-53-63","url":null,"abstract":"The study objective is to analyze the efficiency indicators of the organizational management structure of transport company AV Transport in accordance with the author methods. \u0000The task to which the paper is devoted is to apply the above methods for evaluating the the efficiency of the organizational management structure by the example of a transport company. \u0000The research method is the author's technique for determining the level of organization efficiency of a transport company and evaluating the effectiveness of potential organizational changes, consisting of five stages. The analysis includes numerical simulation of organization models behavior presented as systems of interacting agents. Efficiency indicators of standard models and an operating transport company are assessed in order to determine the type of better management structure. The level of adaptability of employees and its impact on the efficiency of the company is determined. Then several types of modifications of intra-organizational relationships are modeled, including the introduction of elements of the hierarchical structure, the position of a communication broker, an increase in the number of connections at one management level, and some others. \u0000The novelty of the work is a method of evaluating the organization efficiency of a transport company, developing a methodology for determining the costs and justifying the expediency of choosing organizational changes, calculating potential efficiency values when applying innovations. \u0000The study results show that the efficiency of the organizational structure of management is directly dependent on the indicators of individual employee effectiveness and is determined by the configuration of intra-organizational relationships. Modeling a company behavior shows that the introduction of the position of a communication broker and elements of a hierarchical structure demonstrates a positive dynamics of efficiency indicators of a transport company. \u0000Conclusions. The algorithm presented for evaluating the efficiency of the company's structural changes allows to identify optimal ways of influencing and calculate an increase in organization efficiency by increasing the speed of information transfer and the implementation of management decisions.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"85 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139530490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SIMULATION OF FERTILIZER GRANULES ENCAPSULATING IN A DRUM-TYPE APPARATUS","authors":"Shamama Mamedova, Huseyn Karamamedov","doi":"10.30987/2782-5957-2024-1-20-26","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-1-20-26","url":null,"abstract":"The problem of modeling fertilizer granules encapsulation in a drum-type apparatus is considered. \u0000The object of the study is a commodity fraction of superphosphate granules with 2 mm diameter. It is found out that fertilizer granules are encapsulated in two stages. In the first stage, superphosphate granules are covered with 15% solution of potassium carboxymethyl cellulose. \u0000In the second stage, the encapsulated granules are dried. \u0000Using the relationship between the main parameter, the equation of encapsulated granules motion along transverse and variable paths is written. Based on the law of heat transfer, a balance equation, a mathematical model of the process and a calculation algorithm are made. The resulting equation is used in various spheres of national economy.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"33 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139530577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE INFLUENCE OF COOLING PROPERTIES OF QUENCHING LIQUIDS AND HEAT TREATMENT MODES ON 40C2 STEEL HARDNESS","authors":"Denis Tyulenev, V. Sholom, Aleksey Abramov, Dmitry Puzyrkov","doi":"10.30987/2782-5957-2024-1-4-12","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-1-4-12","url":null,"abstract":"The paper objective is to develop a domestic quenching oil for hardening spring clips. The study results of the effect of quenching liquid cooling properties on 40C2 steel hardness are presented. Domestic quenching oil Rosoil-277, an analog of the imported oil Isorapid 277 (PETROFER Germany) is made - for quenching rail clips. The tests were carried out at the installation to determine the cooling characteristics of technological and quenching media. A water-polymer quenching liquid is selected as a substitute for quenching oil. The results of hardness measurements on 40C2 steel workpieces showed that quenching in Rosoil-52 water-polymer quenching liquid gives higher hardness values compared with quenching in Rosoil-277 oil.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"80 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139530534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TECHNOLOGY OPTIMIZATION OF WIRE DRAWING WITH NON-STANDARD SECTION IN MANUFACTURING OF CABLE AND WIRE PRODUCTS (USING THE EXAMPLE OF SENILEK WIRES)","authors":"Miroslav Karasyov, Tatiana Mihalenko","doi":"10.30987/2782-5957-2024-1-27-35","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-1-27-35","url":null,"abstract":"The current state of cable and wire production is analysed. Special attention is paid to the technology of drawing wire of non-standard cross-section, which is used in overhead power lines wires. The paper contains a proposal to optimize the technology of drawing wire of non-standard cross-section using the example of popular SENILEK wires. A new approach and methods for solving the optimization problem using modern CAD are considered, appropriate calculations are given and graphical results on the proposed technology are presented. Based on the results of the paper, it is concluded that in this way it is possible to optimize the production of wires with profile section, which will significantly reduce the number of tools used, the complexity of the work performed and increase productivity. A comparative analysis of the current and proposed wire drawing technologies allows to conclude that the work performed opens up and shows the possibility of creating a universal technology with an infinite number of combinations that can reduce the amount of tools used and, accordingly, the material resources, labor, and time spent on the implementation of the technology, which means its relevance and practical value.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"88 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139530436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE RESULTS OF DEVELOPING AND IMPLEMENTING NEW WATERPOLYMER","authors":"Denis Tyulenev, V. Sholom, Aleksey Abramov, Vladimir Zhernakov, Dmitry Puzyrkov","doi":"10.30987/2782-5957-2024-1-13-19","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-1-13-19","url":null,"abstract":"The paper objective is to develop and implement import-substituting water-soluble quenching media Rosoil for heat treatment of metals. \u0000Comparative results of laboratory tests of Rosoil quenching media cooling capacity and imported analogues are presented. Laboratory tests to determine the cooling capacity of quenching media were carried out using UZS-2 domestic installation, which allows testing in accordance with the requirements of international standards ISO 9950, ASTM D6200 - 01 and ASTM D6482 – 06. The results of pilot tests and the introduction of new Rosoil waterpolymer quenching media are described.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"41 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139530955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PROBLEMS OF WHEELSET REPAIR MANAGEMENT","authors":"A. Shinkaruk, Aleksandr Baryshnikov, Rafik Rafikov","doi":"10.30987/2782-5957-2024-1-36-43","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-1-36-43","url":null,"abstract":"The study objective is to find out the problems of repair management of wheelsets and ways to solve them. In the course of the study, the interdependent parameters of wheelset axle necks and axle box roller cylindrical bearings, as well as the requirements of design, operational and repair documentation are studied. The actual dimensions of the seat surfaces of wheelset axle necks and axle bearings as well as their quantitative distribution are determined. Based on the data obtained, the dependences of the specified parameters are determined in accordance with the requirements of the permissible values of tightness. Taking into account the obtained dependencies, the main changes in GOST requirements are found out, which will ensure the needs of consumer enterprises with the required range of bearings. Also, using statistical methods, the problem of required replacing the inner races of bearings while repairing wheelsets is studied, according to its results it is found that during the repair of wheelsets, enterprises can install new bearings with the replacement of inner races, thereby increasing the level of traffic safety and reliability of axle boxes, since the resource of the axle will be able to fully ensure its operation throughout the entire life cycle of the passenger car. However, for the full implementation of this solution, it is necessary for manufacturers to ensure the production of bearings with a wide range of inner race sizes from group I to group IV.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139530906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DETERMINATION OF THE TANK BOILER LOADING CAPACITY IN CASE OF FIRE, TAKING INTO ACCOUNT GEOMETRIC NONLINEARITY","authors":"Dmitry Zyablov, S. Bespal'ko","doi":"10.30987/2782-5957-2024-1-44-52","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-1-44-52","url":null,"abstract":"Emergency conditions caused by the open flame on the oil tanker lead to temperature stresses, which can result in weakening of the mechanical properties of the material, including rigidity and strength. The emergency state associated with the impact of the open flame on the tank boiler is considered. Exposure to elevated temperatures can cause the boiler damage, product spill, its ignition or explosure. The seal failure of the boiler shell leads to the product spill that can support the ignition process, as well as damage the environment. A technique to determine the loading capacity of a tank boiler in a flame hearth, taking into account geometric nonlinearity, is considered. The proposed technique is presented as PTC Mathcad program and allows to make fire protection systems during design stage. \u0000The study objective is to determine the loading capacity of a tank boiler in case of fire, taking into account geometric nonlinearity and the implementation of the developed technique for modeling SSS tank boiler shell in case of fire. \u0000To achieve this goal, the following tasks were solved: \u0000- the design diagram of the shell is developed; \u0000- all the assumptions needed for the calculation are considered and taken into account; \u0000- a mathematical model based on the nonlinear theory of shells is to developed; \u0000- Lagrangian field theory is applied to make an expression for potential energy; \u0000- stress-strain state of the tank boiler caused by uneven temperature field in case of fire is simulated; \u0000- the effect of geometric nonlinearity on the deformed state of the shell is evaluated. \u0000A technique is developed to simulate the stress-strain state of a tank boiler under the influence of an open flame, taking into account geometric nonlinearity. \u0000Using the developed technique, SSS of the shell in case of fire is determined by means of PTC Mathcad program; \u0000The maximum displacements of the tank boiler shell caused by the temperature difference in the fire source are given, taking into account geometric nonlinearity and without it.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"95 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139530424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SIMULATION OF CHANGES IN CAR OPERATION RATE DURING THE YEAR","authors":"Evgeniy Kozin, Albert Malshakov","doi":"10.30987/2782-5957-2024-1-64-71","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-1-64-71","url":null,"abstract":"Changes in the quality of cars are influenced by the conditions and rate of their operation. Studies usually approximate the change in the operation rate of equipment during the year with harmonic models that allow reflecting the seasonal nature of equipment usage. The range of variating the operation rate is estimated by variation coefficient. At the same time, harmonic models are not always able to describe a set of data on the equipment operation accurately, and the variation coefficient does not show the rate of change in the intensity function of operation by months of the year, which can affect the flows of failures and recovery. In this regard, the study objective is to determine the nature of the change in the car operation rate, in which the accuracy of approximation by harmonic models decreases. The relevance and novelty of the study is in the search for ways to improve the accuracy of simulation modeling of technical operation of cars, which will improve the efficiency of resource management of motor transport enterprises. The paper uses simulation, interpolation and regression methods using Python programming language. The result of the paper is to determine the range boundaries of using harmonic models to describe the nature of changes in the car operation rate, as well as the use of the function gradient along with the variation coefficient as parameters characterizing the range of variation in the operation rate by months of the year.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"82 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139530523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}