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Article | 25-November-2017

ANALYSIS OF DYNAMICS OF AMETRO VEHICLEMODEL WITH DIFFERENTIALWHEELSETS

Summary. The operating conditions of light rail vehicles (trams, metro vehicles) are predominantly different compared with those of passenger or freight trains. The increased number of low-radii curves has a negative effect on wheel–rail interaction. The general design of light rail vehicle running gear is inherited from passenger trains and adapted to different loads. However, conventional solutions of a running gear may not provide smooth low-radius curve negotiation in all

Rafał MELNIK, Bogdan SOWIŃSKI

Transport Problems, Volume 12 , ISSUE 3, 113–124

Research Article | 21-April-2017

The wheel-rail contact friction influence on high speed vehicle model stability

Right estimating of the coefficient of friction between the wheel and rail is essential in modelling rail vehicle dynamics. Constant value of coefficient of friction is the typical assumption in theoretical studies. But it is obvious that in real circumstances a few factors may have significant influence on the rails surface condition and this way on the coefficient of friction value. For example the weather condition, the railway location etc. Influence of the coefficient of friction changes

Mirosław DUSZA

Transport Problems, Volume 10 , ISSUE 3, 73–86

Article | 01-December-2016

A DOOR MONITORING SYSTEM FOR SUBWAY CARS BASED ON WIRELESS SENSOR NETWORK

The place and performance of wireless sensor networks are rapidly improving in the automotive industry, industrial and environmental monitoring. Uptake of this technology can be used in urban rail vehicle management system. Due to the difficult and time-consuming maintenance of vehicle management, a remote automatic monitoring system is needed. In this paper, it is proposed to design, develop and implement a remote automatic vehicle monitoring system. The complete system architecture includes a

WU Minghu, CHEN Rui, YANG Jie, JIAO Liangbao

International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 4, 1822–1839

Article | 15-March-2021

ASSESSMENT OF THE INFLUENCE OF PREVENTIVE MAINTENANCE ON THE RELIABILITY AND AVAILABILITY INDEXES OF DIESEL LOCOMOTIVES

the rail vehicle that affect the downtime and mean availability most significantly. Specialized software including Weibull++, BlockSim, and MiniTab aided calculations were used to illustrate the application of the results of a modernization project involving a 6Dg diesel locomotive, carried out in cooperation with the biggest Polish rail carrier. The applicability of the proposed tools has been verified on the example of a selected sample of 75 diesel locomotives employing data on their use and

Maciej SZKODA, Grzegorz KACZOR, Robert PILCH, Maksymilian SMOLNIK, Zbigniew KONIECZEK

Transport Problems, Volume 16 , ISSUE 1, 5–18

Article | 04-November-2019

PARALLEL COMPUTATIONS AND CO-SIMULATION IN UNIVERSAL MECHANISM SOFTWARE. PART I: ALGORITHMS AND IMPLEMENTATION

Parallel computations speed up simulation of multibody system dynamics, in particular, dynamics of railway vehicles and trains. It is important for reduction of required time at the stage of new railway vehicle design, for increase of complexity of studied problems and for real-time applications. We consider realization of parallel computations in Universal Mechanism software in three different areas: simulation of rail vehicle and train dynamics, evaluation of wheel profile wear and multi

Dmitry POGORELOV, Alexander RODIKOV, Roman KOVALEV

Transport Problems, Volume 14 , ISSUE 3, 163–175

Article | 31-December-2020

OVERVIEW OF SAFETY AT RAIL-ROAD CROSSINGS IN POLAND IN 2008-2018

The intersection of a public road with a railway line in one level, called a rail-road crossing, is a particularly dangerous place due to the traffic flows crossing it. The regulations give absolute priority to a rail vehicle over a public road user; in addition, significant differences in the masses and speeds of moving vehicles require traffic regulation consisting of adequate passage protection. To this end, the road on which motor vehicles is equipped with road signs informing drivers that

Elżbieta MACIOSZEK, Agata KUREK, Bartłomiej KOWALSKI

Transport Problems, Volume 15 , ISSUE 4, Part 1, 57–68

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