Russian Railway Science最新文献

{"title":"VNIIZhT Scientific Journal celebrates 80th Anniversary! Part II. Victory, post-war recovery and modern development","authors":"A. Kosarev, O. Rimskaya, I. Anokhov, I. V. Sirotenko","doi":"10.21780/2223-9731-2022-81-2-189-202","DOIUrl":"https://doi.org/10.21780/2223-9731-2022-81-2-189-202","url":null,"abstract":"Introduction. Each scientific journal should meet the needs of its readers and the imperatives of its time. The journal can acquire such status if it accomplishes its main mission: increasing the volume of scientific knowledge available to the society. This requires organisation of a meaningful scientific discourse on its pages. The purpose of the article is to study the history of the Railways Technology Journal development after the Victory in the Great Patriotic War, when the post-war restoration of the economy and the intensive development of communications using advanced scientific knowledge became the topmost priorities. The article ends with an assessment of the current state of the journal and future prospects for its development.Materials and methods. The authors used historical, analytical and logical methods of scientific knowledge.Results. The Railways Technology Journal archives testified to the serious changes that took place in scientific journalism. The editorial staff was constantly looking for new ways of interacting with readers, optimising the format of the journal, redefining sections, etc. Ultimately, the journal was renamed: since 1956 the Railways Technology Journal became known as the Bulletin of the All-Union Railway Research Institute. To a large extent, this was due to fundamental changes in the activities of the publisher, the Central Research Institute of the People's Commissariat of Communication Routes of the USSR. Discussion and conclusion. The study of the history of the country's leading railway science journal enables to draw conclusions about the state of the science at the time, as well as the goals set by the country and about the era as a whole.The publication is the final part of the article dedicated to the 80th Anniversary of the journal. Part 1. See the war years in Vol. 80, no. 6.","PeriodicalId":242112,"journal":{"name":"Russian Railway Science","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124229153","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":"Conceptual model of railway car traffic organisation based on the end-to-end control of freight delivery times","authors":"O. Moskvichev, E. A. Mishchenko, S. N. Titarenko","doi":"10.21780/2223-9731-2022-81-2-179-187","DOIUrl":"https://doi.org/10.21780/2223-9731-2022-81-2-179-187","url":null,"abstract":"Introduction. The article presents the analysis of non-compliance of delivery times of railway cargoes with the regulatory time frames. The analysis reveals a decrease in the reliability of delivery, one of the most important quality indicators. The authors assess the operation of existing automated control systems, which shows discontinuities and non-automated functions in the framework of the end-to-end control of the goods and empty cars delivery times. The purpose of the ar tic le is to propose and justify the use of a conceptual model for organising car traffic, based on end-to-end control of delivery times and risk-oriented impact on the limiting technological elements.Materials and methods. The authors applied the methods of the modern theory of traffic management, the theory of mathematical statistics and the theory of decision making.Results. The authors propose a conceptual model based on end-to-end control of goods delivery times and a risk-oriented impact on the limiting technological elements as a part of development of end-to-end process of the goods and empty cars delivery. The model highlights the following key provisions: control of the actual delivery time to stations by assessing the compliance with the technological standard operation times; end-to-end risk-oriented control of actual delivery times of cargo and empty cars along the entire route; providing recommendations to accelerate the advancement of the car traffic based on the technical and economic feasibility study.Discussion and conclusion. The implementation of the proposed conceptual model enables to employ scientifically based operational decision-making to control the flow of the traffic at each stage along the route and to improve the quality of transport services and the quality of operational work of railway transport. The conceptual model can be implemented as a separate module integrated into the existing automated station control system.","PeriodicalId":242112,"journal":{"name":"Russian Railway Science","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116174469","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":"Assessment of transportation capacity balance of railway network polygons","authors":"A. Borodin, V. Panin, M. A. Ageeva, A. Sokolov, S. Y. Kirillova, E. Dmitriev, A. Kravchenko","doi":"10.21780/2223-9731-2022-81-2-158-169","DOIUrl":"https://doi.org/10.21780/2223-9731-2022-81-2-158-169","url":null,"abstract":"Introduction. Traffic and transportation capacities of railway polygons and traffic flows are not constant throughout the year. Permissible capacity levels are determined by the condition of unhindered reception of trains by stations. It is necessary to calculate the balance of transportation capacity, making it possible to combine growing traffic with high rates with infrastructure development and repair works. The purpose of the study is to develop methodological solutions for assessing the balance of the railway transportation capacity and substantiating the procedure for implementing infrastructure measures in the context of the growing dynamics of the originating traffic and the tight deadlines for repairing and reconstructing the infrastructure.Materials and methods. The developed solutions are based on the data of the Russian Railways information systems, automated forecasting of the infrastructure and transportation resources of the railway network, and hybrid mathematical models.Results. The article presented the results of the substantiation of the normative restrictions on the daily time budget for the passage of trains, depending on the classification and specialisation of railway lines. The procedure for calculating the traffic capacity of sections with automatic locomotive signalling is determined as an independent means of interval control of train traffic with movable boundaries of block sections that change depending on the speed and mass of the train. The characteristics of the available, estimated, planned and required traffic and transportation capacities were determined with a distinction between measures for the development of traffic and transportation capacities and programs for improvement of infrastructure facilities. The authors put forward the problem of compromise management to ensure the required volumes of freight and passenger traffic, a given volume of reconstruction work on the development of infrastructure and repair work to maintain the required degree of its readiness. A classification of reconstructive, technological, organisational, technical and complex measures of influence on the unevenness of transport processes in the conditions of depletion of infrastructure and scheduling resources was presented.Discussion and conclusion. The developed solutions enable to increase the feasibility and efficiency of complex projects for the development of traffic and transportation capacities and measures to improve the operation of railway network polygons.","PeriodicalId":242112,"journal":{"name":"Russian Railway Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129184865","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":"Redistribution of tractive force per axle for electric locomotives with asynchronous traction motors","authors":"N. D. Shilin, S. Prokof'ev","doi":"10.21780/2223-9731-2022-81-2-148-156","DOIUrl":"https://doi.org/10.21780/2223-9731-2022-81-2-148-156","url":null,"abstract":"Introduction. Improving the traction and adhesion properties of freight electric locomotives is currently an urgent issue for the domestic locomotive industry. The increase in the mass and speed of trains enables to seek new ways and possibilities for realising the maximum tractive force of freight locomotives in order to meet the requirements of the rapidly developing transportation methods.Materials and methods. The authors carries out the analysis of existing theoretical and practical methods of adhesion control and developed the algorithm for controlling the wheelsets adhesion of a locomotive with asynchronous traction motors.Results. The authors concerning the tests analysis of a real electric locomotive, developed a mathematical model of the locomotive movement, which included algorithms for axial control of the tractive force with the redistribution of the tractive force between the axles. Calculations of a mathematical model of the movement of a locomotive with a train on a section with the redistribution algorithm both enabled and disabled, as well as with various settings of this algorithm, were carried out. The model also took into account the change in the adhesion coefficient of the wheels with the rails depending on the numerical order of a wheelset in the direction of travel, as well as the additional loading and unloading forces that arise in the undercarriage depending on the tractive force being realised. As a result of the calculations, obtained data showed good convergence with the test data of a real electric locomotive.Discussion and conclusion. The developed mathematical model allows evaluating the realisation of the tractive force of a locomotive as close as possible to that specified by the locomotive throttle under conditions of a changing adhesion coefficient and its heterogeneity under different wheelsets of the locomotive. The obtained results can be further applied in the development of promising freight electric locomotives with asynchronous traction motors.  ","PeriodicalId":242112,"journal":{"name":"Russian Railway Science","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127717919","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":"Application of elastically protected hydraulic vibration damper in spring suspension of locomotives","authors":"A. Savos’kin, N. Lavlinskaya, P. Ivanov","doi":"10.21780/2223-9731-2022-81-2-134-147","DOIUrl":"https://doi.org/10.21780/2223-9731-2022-81-2-134-147","url":null,"abstract":"Introduction. In the undercarriage of modern locomotives hydraulic vibration dampers are widely used to dampen vertical vibrations that occur in the axlebox stage of the spring suspension. Their resistance force is directly proportional to the deformation rate of the spring set. High levels of vibration frequencies and amplitudes in the axlebox stage lead to a significant increase in the strain rate and dissipative forces, which causes frequent failures of hydraulic vibration dampers. Therefore, issues related to improving the performance of axlebox hydraulic dampers are actual.Materials and methods. In order to evaluate the effectiveness of elastically protected hydraulic vibration damper in axlebox suspension, the authors studied the vibrations of a simplified model of a 2ES5K electric locomotive with a typical layout of the axlebox stage of spring suspension and a circuit with an elastically protected hydraulic vibration damper. The authors used a high-frequency random process as a kinematic perturbation of vibrations. The system of differential equations was solved in the MatLab — Simulink software package by numerical integration using the Runge — Kutta method of the fourth order. As a result of the solution, realisation of stationary and ergodic random processes were obtained. Results. The comparison of the obtained characteristics of random processes of vibrations of these two options showed that the use of an elastically protected axlebox vibration damper significantly reduces the frequency range and amplitudes of dissipative forces, which ensures a reduction in the number of axlebox damper failures and an increase in the number of runs before replacement is required.Discussion and conclusion. The shown efficiency of using an elastically protected axlebox vibration damper allows increasing the reliability of the damper. In order to determine the distance run between overhauls, it is necessary to carry out a controlled operation cycle or test the prototype axlebox assembly with the elastically protected vibration damper and measure the parameters of such assembly.  ","PeriodicalId":242112,"journal":{"name":"Russian Railway Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122749962","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":"Comprehensive analysis of the modern rolling stock efficiency in bulk cargo transportation","authors":"S. Vakulenko, M. Romenskaya, K. Kalinin, K. I. Shvedin","doi":"10.21780/2223-9731-2022-81-2-170-178","DOIUrl":"https://doi.org/10.21780/2223-9731-2022-81-2-170-178","url":null,"abstract":"Introduction. Under the conditions of increasing containerisation of railway freight traffific, the problem of fifinding new cargo flflows suitable for transportation of freight containers or other types of intermodal freight containers on acceptable terms for both the carrier and the consignor is becoming increasingly important. Being of a fifixed size, large-capacity containers can not always meet the demands of consignors due to insuffificient carrying capacity, body volume and tariff conditions. The article examines the technical and economic effificiency of railway transport using various types of rolling stock and corresponding logistics technologies in the search for new areas for containerisation of cargo flflows.Materials and methods. Using bulk transportation, which is weakly subject to containerisation, as example, the authors carried out an analysis of the effificiency of rolling stock depending on the type of transported bulk freight (freight density). The comparison was performed both between common types of rolling stock (conventional and increased axle load gondola) and rather rarely used types of rolling stock (articulated gondola with increased axle load, demountable railway body, open top containers and specialised bulk containers).Results. Graphs have been plotted showing the effificiency of using each type of rolling stock, expressed through the volume of transported freight per running meter of the car and through the use of the useful volume of the rolling stock itself. The comparison proved, fifirstly, the obvious thesis about the better suitability of gondola cars for the transportation of bulk freight, and secondly, it showed a signifificant deterioration in the bulk freight transportation conditions for largecapacity containers.Discussion and conclusion. The innovative system of demountable railway bodies demonstrates average results in the overall ranking, which indicates suffificient potential for the implementation of this logistics technology.","PeriodicalId":242112,"journal":{"name":"Russian Railway Science","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129720848","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":"Proposals for development of a reference method for measuring lateral forces","authors":"A. Brzhezovskiy","doi":"10.21780/2223-9731-2022-81-2-101-113","DOIUrl":"https://doi.org/10.21780/2223-9731-2022-81-2-101-113","url":null,"abstract":"Introduction. The article considers the prerequisites for choosing the most expedient reference method of experimental determination (measurement) of the lateral (horizontal transverse) force acting in the contact zone of the wheel and the rail head in relation to the procedure for establishing the conditions for the circulation of rolling stock on the railway network. This is one of the important force factors of the interaction of the rolling stock with the elements of the permanent way of the railway track. The author presents a set of methods for experimental evaluation of lateral forces based on the measurement of rail deformations, which were applied in the works of certified testing centres for railway equipment in Russia and the Commonwealth states.Materials and methods. Based on a set of known experimental techniques, the author proposed to take statistical estimates of the measurement error established by the current interstate regulations as criteria for the validity of the choice of a refe rence measurement technique. Determination of the reference measurement technique involves conducting purposeful experiments with similar conditions, including the types of rolling stock under test, the parameters of the device and structure of the permanent way of the measured section, meteorological parameters, etc. The author has applied the procedures that include the choice and justification of the reference value of the measured indicator, comparison of statistical estimates of the measurement error of lateral forces along with the requirements imposed on the conditions for conducting experiments in accordance with the requirements of regulatory documents of Rosstandart.Results. As a result, the author described the methods for statistical processing of experimental information of various considered techniques for measuring lateral forces, which enabled to justify the choice of the reference measurement technique.Discussion and conclusion. The presented method for determining the reference method for measuring the lateral forces of the impact of the wheel on the rail head according to the deformations of the rail considers the requirements of the regulatory documents of Rosstandart and can be used in the experimental evaluation of interaction indicators in the mechanical wheel — rail system.","PeriodicalId":242112,"journal":{"name":"Russian Railway Science","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123926345","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 a double-circuit subordinated coordinate regulation system of the active po wer factor corrector for the electric locomotive auxiliary electric drive","authors":"M. Pustovetov","doi":"10.21780/2223-9731-2022-81-2-125-133","DOIUrl":"https://doi.org/10.21780/2223-9731-2022-81-2-125-133","url":null,"abstract":"Introduction. The object of this study is an auxiliary frequency-controlled electric drive of an AC locomotive, or more specifically, the structure and parameters of the system for regulating the coordinates of the active power factor corrector, which is a part of the electric drive and a unit that ensures the energy efficiency of the electric drive as well as its electromagnetic compatibility with other equipment on board the electric locomotive and the power network. The purpose of the study is to substantiate the structure of the system for regulating the coordinates of an active power factor corrector, the choice of types of regulators and the calculation of their parameters.Materials and methods. The author has chosen as the research method the calculation of transfer functions of regulators of the subordinated regulation system, followed by computer simulation of the processes in electrical circuits using the OrCAD computer-aided design system.Results. The author made a conclusion about the expediency of using a two-circuit system of subordinated coordinate regulation containing a voltage control circuit and a current control circuit. The researcher presented and analytically compares the results of modelling of a two-circuit coordinate regulation system for the active power factor corrector for various types of regulators. The models with an aperiodic current regulator and a proportional-integral voltage regulator showed the best results.Discussion and conclusion. The obtained data serve as the basis for further improvement of the active power factor corrector operation by improving and optimising the settings, structure and algorithms of the control system, which, with the selected hardware components of the power unit, will enable it to perform its functions with a high degree of reliability in the entire range of disturbing and controlling actions on board of an electric locomotive.","PeriodicalId":242112,"journal":{"name":"Russian Railway Science","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133046082","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":"Editor-in-Chief address","authors":"A. Kosarev","doi":"10.21780/2223-9731-2022-81-2-10-11","DOIUrl":"https://doi.org/10.21780/2223-9731-2022-81-2-10-11","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":242112,"journal":{"name":"Russian Railway Science","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125769136","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":"Two-layer spherical rubber-metal joints and problems of their calculation features","authors":"A. Kosmodamianskiy, V. Vorob'ev, O. Izmerov, D. Shevchenko, D. Rasin","doi":"10.21780/2223-9731-2022-81-2-114-124","DOIUrl":"https://doi.org/10.21780/2223-9731-2022-81-2-114-124","url":null,"abstract":"Introduction. The article analyses the methods for calculating the characteristics of spherical rubber-metal joints. The authors consider a verified calculation model for determining the stiffness characteristics of spherical rubber-metal joints, both single-layer and double-layer.Materials and methods. The researchers used computer modelling and the finite element method to determine the features of the spherical rubber-metal joints. The possibility of neglecting the deformation of the metal parts of the joint for the modelling purposes was substantiated, which enabled to simplify the calculation model. Moreover, the authors proposed the method for measuring the effect of the elastic layer precompression and determined the values of radial stiffness for single-layer and double-layer rubber-metal joints at different hardness of materials, which coincided with the experimental results. Results. As a result, the authors revealed that with a decrease in the thickness of the rubber layer by assessing the rigidity of the joint, its features were significantly affected by the accuracy of setting the Poisson's ratio. A satisfactory convergence of the radial stiffness of the joint found through the modelling and experimental studies was achieved at a Poisson's ratio equal to 0.499999 (the discrepancy is about 5 %, which is less than the technological spread of rigidity during manufacture). The authors also found out that the rigidity of two-layer rubber-metal joints, similar in size and compensatory capacity to those used in the design of domestic locomotives, should be 6.3 times higher than for existing single-layer ones. Such features would reduce the deformation of rubber by loads exsposion during operation and thereby would solve the problems with the reliability of traction motors suspension units.Discussion and conclusion. Due to the fact that the shape of the free surface of the side faces of two-layer rubber-metal joints before assembly should have small radii of the recesses curvature, further research is needed to select the rational geometry of the free surface of the side faces. The researchers got a utility model patent for the proposed design and manufacturing technology of two-layer rubber-metal joints.  ","PeriodicalId":242112,"journal":{"name":"Russian Railway Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125801552","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}