Determination of the dynamic characteristics of freight wagons with various bogie
Serhiy V. Myamlin,Leonas Povilas Lingaitis,Stasys Dailydka,Gediminas Vaičiūnas,Marijonas Bogdevičius,Gintautas Bureika +5 more
TLDR
In this article, the main dynamic indicators include the vertical Kvd and horizontal Khd dynamic coefficients as well as the stability coefficient Ks, which determines the wheel flange resistance to derailment.Abstract:
In most cases, dynamic characteristics determine the wagon maintenance cycle, traffic safety, reliability and durability performance. The main dynamic indicators include the vertical Kvd and horizontal Khd dynamic coefficients as well as the stability coefficient Ks, which determines the wheel flange resistance to derailment. The article compares dynamic indications for three different types of bogies. There were no tangible differences observed for all the three different types of bogies running at a speed of 40 to 120 km/h on a direct tangent rail section. Nevertheless, there is a realistic potential to improve the dynamic indicators of a freight wagon by rationalising suspension unit parameters.read more
Citations
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Determining Strength Indicators for the Bearing Structure of a Covered Wagon's Body Made From Round Pipes When Transported by a Railroad Ferry
TL;DR: In this paper, the authors developed a model of strength of a loadbearing bodywork of a covered wagon made from round tubes when transported by a railroad ferry, and determined a design service life of the node for fastening chain screeds at the body of the covered wagon.
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Establishing patterns in determining the dynamics and strength of a covered freight car, which exhausted its resource
Oleksij Fomin,Alyona Lovska +1 more
TL;DR: In this paper, the service life of a covered freight car was investigated and it was found that the maximum equivalent stresses occur in the area of interaction between the girder beam and the rod beam and amount to 344 MPa.
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Research into a possibility to prolong the time of operation of universal open top wagon bodies that have exhausted their standard resource
Andrii Okorokov,Oleksij Fomin,Alyona Lovska,Roman V. Vernigora,Irina Zhuravel,Volodimir Fomin +5 more
TL;DR: The study conducted would help determine the feasibility of prolongation of service operation of open top wagons that have exhausted their standard resource.
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Experimental confirmation of the theory of implementation of the coupled design of center girder of the hopper wagons for iron ore pellets
TL;DR: In this paper, the authors presented results and special features of the conducted experimental studies into proposed theory of implementation of the coupled design of a center girder of hopper wagons for iron ore pellets.
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Testing of Railway Vehicles Using Roller Rigs
TL;DR: In this paper, the authors presented an initial study prepared within the framework of the joint project and summarized the possibilities of roller rig utilization for railway vehicles research and described the main concepts of existing design solutions.
References
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Journal ArticleDOI
Study on the wheel/rail interaction and derailment safety
Jing Zeng,Pingbo Wu +1 more
TL;DR: In this paper, the authors studied the wheel flange climb derailment and wheel impact derailment with a single wheel and a single test stand, and derived the analytical solutions for the tangential motion of the wheel/rail contact point and the jumping height of a wheel.
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Safety Criteria for Evaluation of Railway Vehicle Derailment.
Hiroaki Ishida,Masaki Matsuo +1 more
TL;DR: In this article, the authors proposed to use the time duration of Y/Q in order to assess the safety of railway vehicles against derailment and the necessity to control the right to left static wheel load unbalance ratio and its limit value on assembling bogies.
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Modelling the interaction between railway wheel and rail
TL;DR: In this paper, a mathematical model for assessing the real operating conditions of railway rolling stock, taking into account the situations when the wheel loses contact with rail, is presented, and the obtained amplitudinal fluctuation characteristics depend on the set roughness function and the running speed of the wheel.