Improvement of the bearing structure of the wagon-platform of the articulated type to ensure the reliability of the fixing on the deck of the railway ferry

Lovska, Alyona; Gerlici, Juraj; Fomin, Oleksij; Kravchenko, Kateryna; Prokopenko, P.; Lack, Tomáš

doi:10.1051/matecconf/201925402035

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…The parameters of the disturbing effect (sea waves) were determined on the basis of the reference literature (Table 2) [36]. The solution of the system of differential Equation (1) was performed using the Runge-Kutta method in the MathCad environment [37][38][39][40][41][42][43]. For this purpose, the transition was made from systems of second-order differential equations to systems of first-order differential equations, followed by the use of standard algorithms for solving systems using the rkfixed function of Mathcad.…”

Section: Mathematical Modelling Of the Dynamic Load Of Containersmentioning

confidence: 99%

Dynamic Load Modelling within Combined Transport Trains during Transportation on a Railway Ferry

et al. 2020

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The development of foreign economic activity of the Eurasian states led to the introduction of rail and ferry transportation. It is important to note that the current normative documentation does not fully cover the issues of transporting combined trains by sea. This can lead to a violation of the traffic safety of both the railway ferry and the transport of containers as part of combined trains by sea. In this connection, we investigated the dynamic loading of a container as part of a combined train when transported by a railway ferry. To ensure the stability of the container relative to the frame, we suggested an improvement of the load-bearing structure of a flat wagon. Additionally, we suggested the use of a viscous linkage between containers with the aim of reducing their dynamic load. To justify the suggested solutions, we carried out a mathematical modelling of the container dynamic load. The calculation was performed in MathCad. Due to the fact that the container has its own degree of freedom when transported by sea, the accelerations were separately determined for the supporting structure of the flat wagon and for the container. We found that the total amount of acceleration that acted on the container was 3.57 m/s2 (0.36 g) and on the load-bearing structure of the wagon was 2.47 m/s2 (0.25 g) which were, respectively, 38% and 23% less than the acceleration values in the typical scheme of their interaction. To determine the fields of acceleration distribution relative to the load-bearing structure of a flat wagon with containers, we carried out computer modelling of their dynamic load. The maximum percentage of discrepancy between the accelerations obtained by mathematical and computer modelling was 17.7%. The study will contribute to the creation of recommendations for the safe transport of combined trains by sea, as well as to increasing the efficiency of combined transport through international transport corridors.

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Section: Mathematical Modelling Of the Dynamic Load Of Containersmentioning

confidence: 99%

Dynamic Load Modelling within Combined Transport Trains during Transportation on a Railway Ferry

et al. 2020

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“…The advantage of this study in comparison with [1][2][3][4][5][6][7][8] is that the improvement of the strength of the mechanical brake system is achieved by the introduction of an energy-absorbing material in the BLT. This contributes to an increase in the moment of resistance, and, accordingly, the indicators of the strength of the BLT elements.…”

Section: Research Results and Their Discussionmentioning

confidence: 99%

“…The work [3] analyzed the dynamic forces acting on the load-bearing structure of the bodies of freight cars and related to the guarantee of traffic safety during operation in international traffic. However, at the same time, the authors did not consider the load on the components of the brake system of three-element carriages.…”

Section: Suggested Solution To the Problemmentioning

confidence: 99%

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Study of the stress-strain state of the brake lever transmission of the 18-100 carriage model

Lovska

Ravlyuk

Babenko

2022

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The object of research is the brake lever transmission of the 18-100 freight car carriage. The investigated problem: the destruction of the elements of the triangle, which leads to the occurrence of failures during the car operation. As a result of such refusals, total losses for the railway infrastructure of Ukraine during freight transportation amount to hundreds of thousands of hryvnias. The main scientific results: the strength of the brake lever transmission of the freight car carriage is investigated and the most loaded components of its structure are identified. It is proposed to improve the triangle string by making it from a round pipe filled with energy-absorbing material. Aluminum foam is used as an energy-absorbing material. To justify the proposed solution, a calculation of the strength of the brake lever transmission is performed using the finite element method. The calculation results show that the maximum equivalent stresses that occur in the string do not exceed the allowable ones. The peculiarity of the obtained results is that the proposed improvement of triangle elements can be applied not only at the stage of designing the mechanical brake system, that is, during the manufacture of car assemblies at car-building plants. It is advisable to apply the proposed solutions when carrying out depot or capital type repairs at car repair enterprises. The field of practical use of the results is car-building and car-repair enterprises of railway transport of Ukraine. Innovative technological product: the improvement of triangle elements will increase the efficiency of the braking systems of freight rolling stock, increase the speed of cars, reduce the time for the delivery of goods, reduce operating costs due to the failure of freight car units in operating conditions, and guarantee the level of safety of traffic on the railway. Also, the conducted research will contribute to the creation of developments in improving the reliability of the braking systems of modern rolling stock. The scope of application of the innovative technological product: the fleet of freight cars of JSC "Ukrzaliznytsia", as well as its own industrial transport cars

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Investigation of Features of Dual Wear of Pads in Brake System of Freight Cars

Ravlyuk¹

2019

STP

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Improvement of the bearing structure of the wagon-platform of the articulated type to ensure the reliability of the fixing on the deck of the railway ferry

Cited by 4 publications

References 3 publications

Dynamic Load Modelling within Combined Transport Trains during Transportation on a Railway Ferry

Dynamic Load Modelling within Combined Transport Trains during Transportation on a Railway Ferry

Study of the stress-strain state of the brake lever transmission of the 18-100 carriage model

Investigation of Features of Dual Wear of Pads in Brake System of Freight Cars

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