Pub Date : 2022-12-28DOI: 10.32703/2617-9040-2022-40-10
V. Demchenko, O. Demchenko
For the preparation and during the execution of the work, experimental and theoretical studies were carried out on the influence of the state of the rolling surface profile of the wheelset on the level of interaction forces between the elements of the rail track and rolling stock in operation on the railways of Ukraine. Approaches to modeling the influence of the rolling surface profile of wheelsets on the stability of the wheelset movement and force interaction with the rail track were further developed. Experimental studies of the wear of the rolling surface of wheelsets of rolling stock were carried out, the intensity of their wear depending on the mileage of the locomotive was investigated. Studies of the influence of technical characteristics of hardness in the interaction of rail and wheel and their impact on the service life on the railways of Ukraine are analyzed. After the beginning of operation of wheelsets with increased hardness value, the optimal ratio of hardness of rail and wheel steel was violated. From various sources on the interaction of rails and wheels it is known that the best wear resistance in a friction pair is shown by metals with approximately the same hardness. Based on the data obtained, their analysis was carried out with the development of recommendations for further operation.
{"title":"INFLUENCE OF WHEEL PROFILE AND HARDNESS ON TRACK STABILITY WITH DIFFERENT STRUCTURE STRUCTURES","authors":"V. Demchenko, O. Demchenko","doi":"10.32703/2617-9040-2022-40-10","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-40-10","url":null,"abstract":"For the preparation and during the execution of the work, experimental and theoretical studies were carried out on the influence of the state of the rolling surface profile of the wheelset on the level of interaction forces between the elements of the rail track and rolling stock in operation on the railways of Ukraine. Approaches to modeling the influence of the rolling surface profile of wheelsets on the stability of the wheelset movement and force interaction with the rail track were further developed. Experimental studies of the wear of the rolling surface of wheelsets of rolling stock were carried out, the intensity of their wear depending on the mileage of the locomotive was investigated. Studies of the influence of technical characteristics of hardness in the interaction of rail and wheel and their impact on the service life on the railways of Ukraine are analyzed. After the beginning of operation of wheelsets with increased hardness value, the optimal ratio of hardness of rail and wheel steel was violated. From various sources on the interaction of rails and wheels it is known that the best wear resistance in a friction pair is shown by metals with approximately the same hardness. Based on the data obtained, their analysis was carried out with the development of recommendations for further operation.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44238918","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}
Pub Date : 2022-12-28DOI: 10.32703/2617-9040-2022-40-16
V. Kovalchuk
The purpose of this article is to build a mathematical model for calculating the stress-strain state of structural elements of the road pavement. The model is based on the universal function parameter - the force of adhesion of the reinforcing rod to the concrete along their surface contact. It is proposed to define the specified adhesion force as the solution to the simulated boundary value problem. It is shown that it is expedient to use hyperbolic functions to solve such a problem. For the adhesion force, an analytical dependence is obtained, which is a nonlinear function. The proposed model of analysis of the stress-strain state of the reinforcement in comparison with other models is relatively simple. The results of modeling using Maple for the analytical dependence of the adhesion force on the length of the reinforcing rod are shown. It is established that the empirical parameter of the system significantly affects the distribution function of normal stresses. The developed theory will allow design engineers to solve the problem of optimizing pavement structures.
{"title":"ANALYTICAL AND NUMERICAL SIMULATION FOR THE FORCE OF ADHESION OF REINFORCING ROD WITH CONCRETE","authors":"V. Kovalchuk","doi":"10.32703/2617-9040-2022-40-16","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-40-16","url":null,"abstract":"The purpose of this article is to build a mathematical model for calculating the stress-strain state of structural elements of the road pavement. The model is based on the universal function parameter - the force of adhesion of the reinforcing rod to the concrete along their surface contact. It is proposed to define the specified adhesion force as the solution to the simulated boundary value problem. It is shown that it is expedient to use hyperbolic functions to solve such a problem. For the adhesion force, an analytical dependence is obtained, which is a nonlinear function. The proposed model of analysis of the stress-strain state of the reinforcement in comparison with other models is relatively simple. The results of modeling using Maple for the analytical dependence of the adhesion force on the length of the reinforcing rod are shown. It is established that the empirical parameter of the system significantly affects the distribution function of normal stresses. The developed theory will allow design engineers to solve the problem of optimizing pavement structures.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46596756","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}
Pub Date : 2022-12-28DOI: 10.32703/2617-9040-2022-40-3
A. Sulym, O. Safronov, P. Khozia, A. Strynzha
The type and characteristics of such cargo as iron ore pellets are described. The manufacturing technique of iron ore pellets at the mining processing plant is given. The process of transporting iron ore pellets along the main tracks of JSC "Ukrzaliznytsia" to the consumers of these products was considered using the example of PJSC "Poltava Mining and Processing Plant". It has been established that iron ore pellets are transported on the main railway tracks by one of the following types of freight wagons: universal gondola cars with a hollow-bottom body or discharge doors, specialized hopper wagons for the transportation of pellets and agglomerate and mainline dump cars. A comparative analysis of the efficiency of the use of the specified types of freight wagons was carried out according to such technical and economic indicators (criteria) as tare weight, carrying capacity, car body volume, material intensity, specific volume, dimensions, service life time, overhaul life, tare loading coefficient, coefficient body capacity utilization, running load, cost, life cycle cost. It was determined that the most rational option for the transportation of iron ore pellets is the use of a universal gondola car. Further research should be directed to the development of a standard-sized series of specialized freight wagons with increased linear load and improved technical and economic indicators for the transportation of iron ore pellets based on a universal gondola car. The content of the article will contribute to the rational choice of freight rolling stock for the transportation of such kinds of cargo as iron ore pellets on mainline railways.
{"title":"JUSTIFICATION OF THE NEED FOR CONSTRUCTION OF A SPECIALIZED WAGON FOR TRANSPORTATION OF IRON ORE PELLETS","authors":"A. Sulym, O. Safronov, P. Khozia, A. Strynzha","doi":"10.32703/2617-9040-2022-40-3","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-40-3","url":null,"abstract":"The type and characteristics of such cargo as iron ore pellets are described. The manufacturing technique of iron ore pellets at the mining processing plant is given. The process of transporting iron ore pellets along the main tracks of JSC \"Ukrzaliznytsia\" to the consumers of these products was considered using the example of PJSC \"Poltava Mining and Processing Plant\". It has been established that iron ore pellets are transported on the main railway tracks by one of the following types of freight wagons: universal gondola cars with a hollow-bottom body or discharge doors, specialized hopper wagons for the transportation of pellets and agglomerate and mainline dump cars. A comparative analysis of the efficiency of the use of the specified types of freight wagons was carried out according to such technical and economic indicators (criteria) as tare weight, carrying capacity, car body volume, material intensity, specific volume, dimensions, service life time, overhaul life, tare loading coefficient, coefficient body capacity utilization, running load, cost, life cycle cost. It was determined that the most rational option for the transportation of iron ore pellets is the use of a universal gondola car. Further research should be directed to the development of a standard-sized series of specialized freight wagons with increased linear load and improved technical and economic indicators for the transportation of iron ore pellets based on a universal gondola car. The content of the article will contribute to the rational choice of freight rolling stock for the transportation of such kinds of cargo as iron ore pellets on mainline railways.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49117209","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}
Pub Date : 2022-12-28DOI: 10.32703/2617-9040-2022-40-12
A. Sulym, O. Orlov
The need for experimental validation of structural solutions concerning the frame of long-base flat wagon and assessment of the accuracy of theoretical calculations by carrying out resource cyclic fatigue tests based on the results of the recent studies analysis in the research of the strength of long-base flat wagons, was established. The methodology for carrying out resource cyclic fatigue tests of a long-base flat wagon is presented. The results of theoretical studies on determining the strength of a long-base flat wagon are described. The results of experimental studies of endurance cyclic fatigue tests of the frame of a long-wheelbase flat wagon before and after structural improvement are shown. Structural changes and improvements of the frame of the long-base flat wagon at the stage of experimental endurance cyclic fatigue tests are presented. The place of initiation and development of a crack in the structure of the frame of a long-base flat wagon is shown. Based on the results of the research, the actual strength of the elements of the wagon structure was determined and the design of the long-base flat wagon was chosen in order to prevent fatigue failure and ensure the required operational safety. The need to improve the evaluation methods of fatigue strength of welded joints of the long-wheelbase flat wagons frames at the design stage has been proven. The content of the article will contribute to the construction of new models of long-base flat wagons for mainline railway and the modernization of existing models, as well as to increase their strength and service life while in operation.
{"title":"EXPERIMENTAL STUDIES OF THE STRENGTH OF A LONG BASE FLAT WAGONS BY CARRYING OUT ENDURANCE CYCLIC FATIGUE TESTS","authors":"A. Sulym, O. Orlov","doi":"10.32703/2617-9040-2022-40-12","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-40-12","url":null,"abstract":"The need for experimental validation of structural solutions concerning the frame of long-base flat wagon and assessment of the accuracy of theoretical calculations by carrying out resource cyclic fatigue tests based on the results of the recent studies analysis in the research of the strength of long-base flat wagons, was established. The methodology for carrying out resource cyclic fatigue tests of a long-base flat wagon is presented. The results of theoretical studies on determining the strength of a long-base flat wagon are described. The results of experimental studies of endurance cyclic fatigue tests of the frame of a long-wheelbase flat wagon before and after structural improvement are shown. Structural changes and improvements of the frame of the long-base flat wagon at the stage of experimental endurance cyclic fatigue tests are presented. The place of initiation and development of a crack in the structure of the frame of a long-base flat wagon is shown. Based on the results of the research, the actual strength of the elements of the wagon structure was determined and the design of the long-base flat wagon was chosen in order to prevent fatigue failure and ensure the required operational safety. The need to improve the evaluation methods of fatigue strength of welded joints of the long-wheelbase flat wagons frames at the design stage has been proven. The content of the article will contribute to the construction of new models of long-base flat wagons for mainline railway and the modernization of existing models, as well as to increase their strength and service life while in operation.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45245093","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}
Pub Date : 2022-12-28DOI: 10.32703/2617-9040-2022-40-20
Y. Koskina, O. Drozhzhyn
The paper examines operations that take place at the sea container terminal in the context of a unified system of information exchange between participants in intermodal cargo transportation. The study aims to formalize the cargo handling process at the sea container terminal through the temporal logic apparatus, which allows for the distribution of the processes necessary for the cargo lots forwarding formalities at the seaport terminal, according to causal relationships in time. The urgency of the work is explained by the rapid development of containerization and the growing demand for transportation in intermodal transport units from the side of cargo owners. The feasibility of implementing "single window" systems for intermodal transportation is confirmed by the complexity of such transportation systems: the presence of several types of transportation, the requirement of a high degree of integration of transportation participants, and strict time constraints. The practical significance of the presented formalization provides an idea of the cargo handling algorithm, contributes to the qualitative formulation of the task of designing software solutions for information exchange at container terminals that shorten the cargo handling process by simplifying the document flow.
{"title":"RESEARCH OF PROCESSING INTERMODAL TRANSPORT UNITS AT THE TERMINAL IN THE \"SINGLE WINDOW\" CONCEPT","authors":"Y. Koskina, O. Drozhzhyn","doi":"10.32703/2617-9040-2022-40-20","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-40-20","url":null,"abstract":"The paper examines operations that take place at the sea container terminal in the context of a unified system of information exchange between participants in intermodal cargo transportation. The study aims to formalize the cargo handling process at the sea container terminal through the temporal logic apparatus, which allows for the distribution of the processes necessary for the cargo lots forwarding formalities at the seaport terminal, according to causal relationships in time. The urgency of the work is explained by the rapid development of containerization and the growing demand for transportation in intermodal transport units from the side of cargo owners. The feasibility of implementing \"single window\" systems for intermodal transportation is confirmed by the complexity of such transportation systems: the presence of several types of transportation, the requirement of a high degree of integration of transportation participants, and strict time constraints. The practical significance of the presented formalization provides an idea of the cargo handling algorithm, contributes to the qualitative formulation of the task of designing software solutions for information exchange at container terminals that shorten the cargo handling process by simplifying the document flow.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45433499","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}
Pub Date : 2022-12-28DOI: 10.32703/2617-9040-2022-40-6
I. Zub, S. Sapronova
The article puts forward a hypothesis according to which the violation of the nominal setting of wheel pairs in railway rolling stock carts is the main reason for the increase in guiding forces in the wheel flange contacts of the wheels of freight cars with the rails. Increased loads in wheel flange contacts are the cause of a number of other negative phenomena: increased intensity of wear (undercutting) of wheel flange, increased wear of the side surfaces of rail heads, decrease in the coefficient of stability of wagons from derailment, etc. To test this hypothesis, a study was conducted to obtain dependencies, first of all, these are the characteristics of the influence of geometric deviations of the position of the wheel pairs in the cart on the level of guiding forces in the contacts of the wheels with the rails and the wear of the wheel flanges. The relevance of this study is confirmed by data on the catastrophic wear of rails and solid-rolled wheels of wagons. An analysis of statistical data oblique setting of wheel pairs in carts in plan due to running-in of side frames was made, which shows that in 80% of wagons these angles can be up to 0,015 rad (0,85 degrees). The formula for the critical derailment ratio of the frame force to the vertical load on the wheel has been clarified, in contrast to Nadal's formula, which additionally takes into account the deflection forces in the contact of the overlapping wheel.
{"title":"NFLUENCE OF DEVIATIONS IN THE POSITION OF WHEEL PAIRS IN A FREIGHT-CAR ON THE GUIDING FORCES","authors":"I. Zub, S. Sapronova","doi":"10.32703/2617-9040-2022-40-6","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-40-6","url":null,"abstract":"The article puts forward a hypothesis according to which the violation of the nominal setting of wheel pairs in railway rolling stock carts is the main reason for the increase in guiding forces in the wheel flange contacts of the wheels of freight cars with the rails. Increased loads in wheel flange contacts are the cause of a number of other negative phenomena: increased intensity of wear (undercutting) of wheel flange, increased wear of the side surfaces of rail heads, decrease in the coefficient of stability of wagons from derailment, etc. To test this hypothesis, a study was conducted to obtain dependencies, first of all, these are the characteristics of the influence of geometric deviations of the position of the wheel pairs in the cart on the level of guiding forces in the contacts of the wheels with the rails and the wear of the wheel flanges. The relevance of this study is confirmed by data on the catastrophic wear of rails and solid-rolled wheels of wagons. An analysis of statistical data oblique setting of wheel pairs in carts in plan due to running-in of side frames was made, which shows that in 80% of wagons these angles can be up to 0,015 rad (0,85 degrees). The formula for the critical derailment ratio of the frame force to the vertical load on the wheel has been clarified, in contrast to Nadal's formula, which additionally takes into account the deflection forces in the contact of the overlapping wheel.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42096390","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}
Pub Date : 2022-12-28DOI: 10.32703/2617-9040-2022-40-22
V. Litvin, I. Taran, Y. Monastyrskyi, I. Klymenko
The paper deals with the topical scientific task concerning substantiation of rational parameters of express mode of transportation in terms of city bus routes. That helps reduce passengers’ time spent for travelling, increase a degree of use of transportation modes as well as favour significant cost reduction for fuel and decrease the amount of harmful emissions in the urban atmosphere. Analysis of the available methods and approaches to the organization of express mode of bus traffic in terms of local routes has helped identified that they do not consider to the full extent the interests of all the traffic participants or have narrow range of application. Those are the facts that limit considerably wide implementation of express mode irrespective of its great potential as for increasing the efficiency of local passenger transportation. Conditions of expedient implementation of express mode of transportation for buses on local routes have been identified basing on the parameters of passenger flow. The developed method of the formation of a list of stops to be serviced by buses operating in the express mode, takes into consideration the irregular nature of passenger flow and intervals of daily bus traffic respectively. Basing on the economic, social, and environmental indices of efficiency of a transportation process, the developed method of identifying rational parameters of express mode of traffic on local bus routes considers dynamic distribution of passenger correspondences between the standard and express route depending on the number of buses and a list of express route stops. А technical and operational assessment of the implementation of the express mode of bus traffic on city route #70 in Dnipro was performed.
{"title":"TECHNICAL AND OPERATIONAL ASSESSMENT OF EXPRESS MODE IMPLEMENTATION FOR BUS TRAFFIC IN DNIPRO","authors":"V. Litvin, I. Taran, Y. Monastyrskyi, I. Klymenko","doi":"10.32703/2617-9040-2022-40-22","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-40-22","url":null,"abstract":"The paper deals with the topical scientific task concerning substantiation of rational parameters of express mode of transportation in terms of city bus routes. That helps reduce passengers’ time spent for travelling, increase a degree of use of transportation modes as well as favour significant cost reduction for fuel and decrease the amount of harmful emissions in the urban atmosphere. Analysis of the available methods and approaches to the organization of express mode of bus traffic in terms of local routes has helped identified that they do not consider to the full extent the interests of all the traffic participants or have narrow range of application. Those are the facts that limit considerably wide implementation of express mode irrespective of its great potential as for increasing the efficiency of local passenger transportation. Conditions of expedient implementation of express mode of transportation for buses on local routes have been identified basing on the parameters of passenger flow. The developed method of the formation of a list of stops to be serviced by buses operating in the express mode, takes into consideration the irregular nature of passenger flow and intervals of daily bus traffic respectively. Basing on the economic, social, and environmental indices of efficiency of a transportation process, the developed method of identifying rational parameters of express mode of traffic on local bus routes considers dynamic distribution of passenger correspondences between the standard and express route depending on the number of buses and a list of express route stops. А technical and operational assessment of the implementation of the express mode of bus traffic on city route #70 in Dnipro was performed.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45297822","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}
Pub Date : 2022-12-28DOI: 10.32703/2617-9040-2022-40-7
Y. Lavrich, S. Plaksіn, L. Pogorіla
An analysis of the transport systems current state in Ukraine has shown that the main problem in this area is the lack of transport infrastructure capacity, due to low route speeds for most transport modes and low levels of traffic organization and management. The level of rail container transport, the most common and perspective type of freight transportation is also low compared to European countries. Therefore, the main idea of the article is to justify the need for the introduction of fundamentally new transport technologies that will help reduce or eliminate the problems of freight transport, and so the article is relevance. The possibility of using magnetic technologies that exclude contact of a vehicle with a road structure, for freight transportation is investigated. The authors consider the main structural elements, functions and possible options of the magnetic levitation transport system of freight transport. The practical value of the work is that the use of magnetic levitation container platforms will significantly increase the intensity and speed of the conveyor sending of each container with a decrease in energy consumption, which will significantly affect the improvement of cargo logistics. The main results of the work: the conceptual bases of construction of unmanned magnetic levitation vehicles and the main systems of their infrastructure are formulated, it is shown that the implementation of the function of drone for the vehicle is possible only if permanent levitation in all sections of the freight transportation will be provided.
{"title":"CONCEPTUAL FUNDAMENTALS OF FREIGHT MAGNETOLEVITATION TRANSPORT SYSTEM CONSTRUCTION","authors":"Y. Lavrich, S. Plaksіn, L. Pogorіla","doi":"10.32703/2617-9040-2022-40-7","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-40-7","url":null,"abstract":"An analysis of the transport systems current state in Ukraine has shown that the main problem in this area is the lack of transport infrastructure capacity, due to low route speeds for most transport modes and low levels of traffic organization and management. The level of rail container transport, the most common and perspective type of freight transportation is also low compared to European countries. Therefore, the main idea of the article is to justify the need for the introduction of fundamentally new transport technologies that will help reduce or eliminate the problems of freight transport, and so the article is relevance. The possibility of using magnetic technologies that exclude contact of a vehicle with a road structure, for freight transportation is investigated. The authors consider the main structural elements, functions and possible options of the magnetic levitation transport system of freight transport. The practical value of the work is that the use of magnetic levitation container platforms will significantly increase the intensity and speed of the conveyor sending of each container with a decrease in energy consumption, which will significantly affect the improvement of cargo logistics. The main results of the work: the conceptual bases of construction of unmanned magnetic levitation vehicles and the main systems of their infrastructure are formulated, it is shown that the implementation of the function of drone for the vehicle is possible only if permanent levitation in all sections of the freight transportation will be provided.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46074957","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}
Pub Date : 2022-12-28DOI: 10.32703/2617-9040-2022-40-17
H. Nesterenko, M. Muzykin, O. Strelko, R. Shcherbyna, O. Pavlenko
Nowadays, railway transport is the most developed in Ukraine. It is the heart of transport services for individuals and legal entities, without it is difficult to imagine the normal functioning of production facilities and logistics firms. Rail transport also occupies the main place among domestic traffic. Passenger transportation occupies a significant place in the work of transport, so suburban transportation occupies the second place in terms of mass transportation after intercity transportation by automobile transport . The demand for this type of transportation can be called elastic, since there is an impact of seasonality on transportation, for example, the beginning and ending of academic semesters, vacation time. Therefore, it is advisable to consider tourist trains that could run on sections of the Dnіpro-Pіvdennij station – Apostolovo station, Dnіpro-Pіvdennij station – Surskoye station, Dnіpro-Pіvdennij station – Zhovtokamenka station, Dnіpro-Pіvdennij station – Elizarovo station. The article provides graphs of the movement of these trains, allowing passengers to visit attractions along the entire route. Consequently, tourist routes can improve the development of tourism throughout Ukraine, and not popular destinations. This may result in increased demand for tourist trains, increased monetization of passenger transportation, thereby improving passenger comfort.
{"title":"WAYS TO INCREASE RAILWAY COMPETITIVENESS","authors":"H. Nesterenko, M. Muzykin, O. Strelko, R. Shcherbyna, O. Pavlenko","doi":"10.32703/2617-9040-2022-40-17","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-40-17","url":null,"abstract":"Nowadays, railway transport is the most developed in Ukraine. It is the heart of transport services for individuals and legal entities, without it is difficult to imagine the normal functioning of production facilities and logistics firms. Rail transport also occupies the main place among domestic traffic. Passenger transportation occupies a significant place in the work of transport, so suburban transportation occupies the second place in terms of mass transportation after intercity transportation by automobile transport . The demand for this type of transportation can be called elastic, since there is an impact of seasonality on transportation, for example, the beginning and ending of academic semesters, vacation time. Therefore, it is advisable to consider tourist trains that could run on sections of the Dnіpro-Pіvdennij station – Apostolovo station, Dnіpro-Pіvdennij station – Surskoye station, Dnіpro-Pіvdennij station – Zhovtokamenka station, Dnіpro-Pіvdennij station – Elizarovo station. The article provides graphs of the movement of these trains, allowing passengers to visit attractions along the entire route. Consequently, tourist routes can improve the development of tourism throughout Ukraine, and not popular destinations. This may result in increased demand for tourist trains, increased monetization of passenger transportation, thereby improving passenger comfort.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46134400","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}
Pub Date : 2022-12-28DOI: 10.32703/2617-9040-2022-40-8
M. Dmytrychenko, I. Kulbovskyi, V. Tkachenko, H. Holub
The problems of obtaining reliable information in online mode about the technical condition of rolling stock are considered. It was determined that obtaining such information is possible thanks to the use of a system for monitoring the parameters of the condition of the rolling stock using technical means that carry out measurements based on metrological support. It is known that one of the main tasks of railway transport is the safety of traffic, which can be ensured by using a parameter monitoring system to maintain and restore the efficiency, reliability and reduce operational costs of rolling stock. The paper presents the metrological aspects of providing measurements of rolling stock parameters by the statistical method of calculating verification intervals, which allows to determine control errors based on the available initial data in the form of specified error intervals of measuring devices. A detailed description of the method and, accordingly, the results of using the method to determine the dependence of the average risk of verification and the dependence of the ratio of the value of the optimal control tolerance on the estimation of the error of the measuring device being verified to the limit of its permissible error on the ratio of losses due to false and undetected failures are presented, in a graphical form.
{"title":"METROLOGICAL ASPECTS OF ENSURING MEASUREMENTS IN RAILWAY ROLLING STOCK PROJECTS","authors":"M. Dmytrychenko, I. Kulbovskyi, V. Tkachenko, H. Holub","doi":"10.32703/2617-9040-2022-40-8","DOIUrl":"https://doi.org/10.32703/2617-9040-2022-40-8","url":null,"abstract":"The problems of obtaining reliable information in online mode about the technical condition of rolling stock are considered. It was determined that obtaining such information is possible thanks to the use of a system for monitoring the parameters of the condition of the rolling stock using technical means that carry out measurements based on metrological support. It is known that one of the main tasks of railway transport is the safety of traffic, which can be ensured by using a parameter monitoring system to maintain and restore the efficiency, reliability and reduce operational costs of rolling stock. The paper presents the metrological aspects of providing measurements of rolling stock parameters by the statistical method of calculating verification intervals, which allows to determine control errors based on the available initial data in the form of specified error intervals of measuring devices. A detailed description of the method and, accordingly, the results of using the method to determine the dependence of the average risk of verification and the dependence of the ratio of the value of the optimal control tolerance on the estimation of the error of the measuring device being verified to the limit of its permissible error on the ratio of losses due to false and undetected failures are presented, in a graphical form.","PeriodicalId":33465,"journal":{"name":"Zbirnik naukovikh prats'' Derzhavnogo universitetu infrastrukturi ta tekhnologii seriia Transportni sistemi i tekhnologiyi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47858596","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：