Vol 9, No 1 (2023)

Cover Page

Full Issue

Reviews

Past, present and future of Superconducting Magnetic Levitation (SML)

Stephan R.M., Deng Z.

Abstract

A review of Superconducting Magnetic Levitation (SML) applied to MagLev trains will be presented. The paper is divided into low-speed and high-speed MagLev. The promising perspectives will close this review.

Modern Transportation Systems and Technologies. 2023;9(1):5-19
pages 5-19 views

Remarks on the development of the limit state method in the field of metal structures

Vasilev K.A., Averchenko G.A.

Abstract

In their article, the authors emphasize the basic principles from the point of view of sustainability, recall the basic initial prerequisites and the results of the dismemberment at the design stages and calculate the main ones before formulating the conditions of reliability from the point of view of the ultimate susceptibility of the ability and the maximum state of deviation to natural operation. Further, the authors pay attention to distinguishing between the problems of the load from the problematic reaction of the structure to calculations and theoretical and experimental calculations required to transform loads on calculations. The authors emphasize that first it is necessary to fully own the so-called. The “first value of the application” of the theory of reliability, limitedly identified use of plastic reserves, accounting for the history of reaction, until the prerequisites for the use of the maximum foundation method based on a high degree of reliability theory are performed.

Modern Transportation Systems and Technologies. 2023;9(1):20-33
pages 20-33 views

Original studies

Development of approaches for transport infrastructure adaptation to climatic change

Akhtyamov R.G.

Abstract

Aim: Development of transport infrastructure adaptation for climatic change.

Materials and Methods: The research method was the analysis of climate change adaptation approaches, climate change adaptation action programs, and adaptation plans at the local, regional and sectoral levels.

Results: The proposed approach consists of an adaptation strategy and an implementation plan for the adaptation strategy to integrate climate change adaptation activities into existing management. The outcome of the development of approaches to the adaptation of the transport industry to climate change should be an adaptation strategy and plan.

Conclusion: The iterative structure makes it possible to adjust adaptation measures, taking into account the refinement of climate change forecasts, socio-economic and technological changes. The proposed approach allows to determine the level of industry adaptation readiness for adaptation measures improving.

Modern Transportation Systems and Technologies. 2023;9(1):34-43
pages 34-43 views

Proposals for the creation of high-speed transport highways in the Arctic zone: constructions and technologies

Senkin N.A., Andreev D.M., Vasilev V.S.

Abstract

Aim: development of a high-speed transport highway in the Arctic zone, built on the widespread use of electric transport.

Materials and Methods: the trestle structures are designed for combinations of operating loads, forces and impacts, including consideration of dynamic aspects and nonlinearity, using the SCAD Office software package.

Results: according to preliminary technical and economic indicators, the duration of cargo delivery along the Arctic Expressway to the Bering Strait is reduced by 5.5 times compared to the Northern Sea Route (NSR), and passengers by almost 30 times, but at the same time the length of the projected expressway is almost 1.6 times higher due to the need to bypass high coastal mountain ranges.

Conclusion:  when designing a global land transport network, these studies confirm the possibility of using Evacuated Tube Transportation and Maglev technologies for the Arctic High-speed Transport Highway. In further studies, underwater pipelines will be considered, which will have long straight sections with a length of more than 1000 km, bypassing coastal mountain ranges and minimizing the number of transport hubs.

Modern Transportation Systems and Technologies. 2023;9(1):44-63
pages 44-63 views

Operating efficiency of 3ES6 electric locomotives at the Ural-Siberian polygon

Domanov K.I., Bogunov K.V.

Abstract

Background: developed economy requires an appropriate level of development of the transport system, it forms an important basis for the concentration and specialization of production. Consequently, the overall development of the regions and the country as a whole requires the development and modernization of the transport system, which has a direct impact on socio-economic development. In this regard, in order to solve the problems associated with increasing the efficiency of the transportation process in railway transport, it is necessary to introduce improved traction resources. Currently, Russian Railways is actively working to upgrade the corporate locomotive fleet and is addressing the issue of introducing high-capacity electric traction rolling stock, through the use of booster sections of electric locomotives, to drive trains of increased mass and length on strategically important railway sections of Russia integrated into international transport corridors.

Aim: to develop a simulation model for the operation of 3ES6 electric locomotives with a booster section in the areas of the Ural-Siberian test site, to assess the readiness of the transport infrastructure when using the studied locomotives in train operation, to determine the most suitable traction arms for the operational operation of such electric locomotives.

Materials and Methods: to obtain the results, the traction characteristics of the locomotives under consideration, data from the analysis of the traction arms of operation and transport infrastructure using the Yandex Maps navigation system, as well as Russian E2 software for creating graphic-physical 3D models with subsequent simulation, implemented in the Substance Painter and 3Ds software systems, are used max.

Results: an analysis of the areas of operation of the studied locomotives is presented, indicating the advantages and disadvantages of using 3ES6 electric locomotives in the transportation process, a simulation model of the interaction of infrastructure facilities and the locomotive fleet is developed, the prospect of further research is determined in terms of carrying out calculations of a feasibility study for replacing the fleet of obsolete series locomotives.

Conclusion: the obtained results of the study can be used in the organization of operational work and maintenance of 3ES6 locomotives with booster sections to improve the technology of operating a corporate locomotive fleet with a polygon structure for managing the transportation process.

Modern Transportation Systems and Technologies. 2023;9(1):64-82
pages 64-82 views

Investigation of high-voltage discharge in oil on a simulator with a different set of defects

Gorlov A.V., Volchanina M.A., Ponomarev A.V., Kuznetsov A.A.

Abstract

Background: The article describes a device for simulating various insulation defects for use with acoustic control devices for power transformers included in the power supply system of railway transport. The parameters of the recorded signals of the simulator are given, which will make it possible to recognize various insulation defects when diagnosing power transformers under operating conditions which will help to avoid emergency modes and interruptions in the operation of the electric rolling stock of railways.

Aim: experimental studies of a simulator with a different set of defects, obtaining the values of the parameters of acoustic control signals for various defects in the insulation of power transformers.

Methods: experimental studies of automated means of acoustic control, development of technical means for simulating various defects in the insulation of power transformers, processing of acoustic control signals.

Results: the block diagram of the simulator with a different set of defects is given, the values of the parameters of acoustic monitoring signals for various defects in the insulation of power transformers are given.

Conclusion: the above device allows you to reproduce various defects in the insulation of power transformers, to recognize such defects according to the proposed parameters of acoustic control signals.

Modern Transportation Systems and Technologies. 2023;9(1):83-94
pages 83-94 views

Using convolutional neural networks for acoustic-based emergency vehicle detection

Lisov A.A., Kulganatov A.Z., Panishev S.A.

Abstract

Background: A siren is a special signal given by emergency vehicles such as fire trucks, police cars and ambulances to warn drivers or pedestrians on the road. However, drivers sometimes may not hear the siren due to the sound insulation of a modern car, the noise of city traffic, or their own inattention. This problem can lead to a delay in the provision of emergency services or even to traffic accidents.

Aim: develop an acoustic method for detecting the presence of emergency vehicles on the road through the use of convolutional neural networks.

Materials and Methods: The algorithm of work is based on the conversion of sound from the external environment into its spectrogram, for analysis by a convolutional neural network. An open dataset (“Emergency Vehicle Siren Sounds”) from sources available on Internet sites such as Google and Youtube, saved in the “.wav” audio format, was used as a dataset for siren sounds and city traffic. The code was developed on the Google.Colab platform using cloud storage.

Results: The conducted experiments showed that the proposed method and model of the neural network make it possible to achieve an average efficiency of determining the type of sound with an accuracy of 93.3 % and a speed recognition of 0.0004±5 % of a second.

Conclusion: The use of the developed technology for recognizing siren sounds in city noize will improve traffic safety and increase the chances of preventing a dangerous situation. Also, this system can be an additional assistant for hearing-impaired people while driving and everyday life for timely notification of the presence of emergency services nearby.

Modern Transportation Systems and Technologies. 2023;9(1):95-107
pages 95-107 views

Mathematical experiment in logistics research of multimodal freight transportation with time and cost indicators

Bogachev V.A., Kravets A.S., Bogachev T.V.

Abstract

Aim: Development of a new approach to optimizing the process of cargo flows distribution at the transport loop. Construction of a mathematical model of the freight transportation process, which equally takes into account the interests of various participants in the transportation process.

Materials and Methods: A mathematical model of the freight transportation process is built, which is based on the infrastructure indicators of the considered part of the railway loop and is a multicriteria optimization problem of integer programming. The algorithm for solving the problem is common for land transport and is implemented in the environment of a computer algebra system. As a project, which is an example of the application of the developed transport and logistics method, a part of the North-Caucasian railway, adjacent to the main cargo ports of the Azov-Black Sea basin, is considered. The considered railway loop is a transit component, actively exploited for Russian exports, in particular, grain cargoes.

Results: The issues of organizing rail freight transportation in multimodal transport and technological systems are researched on the basis of egalitarian and utilitarian approaches in welfare theory. These approaches are considered in relation to the participants in the transportation process (agents) within the framework of the time and cost indicators of this process. Computational procedures for finding optimal distributions of cargo flows have been brought to concrete results.

Conclusion: A mathematical experiment used as a simulation modeling tool allows versatile and purposeful manipulation of the indicators of the transportation process and the restrictions imposed on transportation plans. The cargo flows distributions to port unloading stations obtained as a result of Pareto optimization are analyzed from the point of view of their rationality and usefulness in relation to agents.

Modern Transportation Systems and Technologies. 2023;9(1):108-121
pages 108-121 views

Design of equi-strength rotating disk

Lyamina E.A., Novozhilova O.V.

Abstract

Background: Rotating disks, such as flywheels, are an important machine part of engines, which requires the development of the theoretical methods of their analysis and design.

Aim: Determination of the profile of equi-strength rotating disks.

Materials and Methods: Methods of the mathematical theory of elasticity and plasticity

Results: Methodology for determining the profile of equi-strength rotating disks obeying the von Mises yield criterion and its application

Conclusion: The methodology developed can be used to design equi-strength rotating disks subject to various combinations of internal and external pressures. It can be extended to more general yield criteria.

Modern Transportation Systems and Technologies. 2023;9(1):122-134
pages 122-134 views

Socio-economic approach to transport investments evaluation

Smirnov S.A., Smirnova O.Y.

Abstract

Background: Transport plays a crucial role in socio-economic and social processes. Despite the fact that transport can be considered as an independent industry, and transport development projects can be considered as independent business projects, the spectrum of transport influence has not yet been fully studied. A qualitative examination of the spheres of influence of transport shows its impact on all significant aspects of socio-economic relations in society.

Nevertheless, classical methods of financial management are used to assess the effectiveness of investments in transport, which do not allow to fully reflect the effects arising from the implementation of such investments.

As practice shows, the use of classical approaches does not allow us to reliably assess the effectiveness of investments in transport. The choice of approaches to assessment is directly dependent on the socio-economic model of the state. The capitalist model focuses on the income received from the implementation of any investment project, whereas the socially oriented model peculiar to Russia is initially focused on the formation of the public good.

The latter approach, in our opinion, is strategically more advantageous on a national scale and requires wide dissemination for the purposes of financial and economic analysis

Aim: to consider the list of methods for evaluating investments in transport and determine a set of factors that require consideration for a socially oriented economy.

Materials and methods: the research methodology is based on the analysis of methods of financial and economic evaluation of investment projects, socio-economic analysis, as well as macroeconomic methods. The information base of the study is based on official legal and methodological information of the authorities of the Russian Federation.

Results: as a result of the study, a list of factors that need to be taken into account when assessing the effectiveness of investments in transport within the framework of the paradigm of socially oriented public administration is determined.

Conclusion: the study confirms that the methods currently used to assess the effectiveness of investments in transport do not fully reflect the effects arising from their implementation. The proposed approach to determining the list of socio-economic effects resulting from the impact of transport projects will improve the quality of management decisions in the transport sector.

Modern Transportation Systems and Technologies. 2023;9(1):135-145
pages 135-145 views

This website uses cookies

You consent to our cookies if you continue to use our website.

About Cookies