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The loads on wheelsets, resulting from torsional vibrations have to be considered in the dimensioning of the axles and press fits. The evaluation of these loads is generally done by extensive test runs and measurement of the respective stresses on the axle. With the proposed process and system analysis it will become possible to predict the maximum torques on the basis of analytical methods. The first part handles the system and model description, illustrating the required quality and complexity of the models for an adequate prediction of the system behaviour. In part two, the physical analysis and safety considerations will be described. In a later paper, a comprehensive description is given for a more general understanding of the complex issue, together with a simplified assessment method for the criticality of a product concerning torsional vibrations. The published articles are written on behalf of Bombardier Transportation Switzerland AG. [ABSTRACT FROM AUTHOR]

The BOMBARDIER FLEXX Urban 3000 bogie platform is used for 100 % low-floor trams. Its characteristics are low noise, high comfort, robustness, reliability and high level of safety. The FLEXX Urban 3000 bogie platform includes various configurations, which have been described in this paper in 2013. It has now reached the next steps in his development, which are described in this article. FLEXX® is a registered trademark of Bombardier and includes eight Platforms from FLEXX Urban for city traffic until FLEXX Power for Locomotives or FLEXX Speed for High speed trains. More than 200 000 FLEXX® bogies are in service in 44 countries all over the world. [ABSTRACT FROM AUTHOR]

As announced at the last Congress in Graz, in the group wide project “Identification of the wear reduction potential of the ÖBB-fleet locomotives" some prototypes have been tested for one year and the measured data was analysed. In this paper the vehicle based measures like the special bogie equipment, the monitoring of the wheel wear and the accomplished test runs for investigation of the traction force are presented. Additionally the infrastructural measures like building the specific measuring site in Schwechat, the monitoring of the dynamic forces and the test runs over other measuring sites are introduced. [ABSTRACT FROM AUTHOR]

By intelligent control on the control levels between the traction controller, the train bus in multiple traction and the wheel sets of the locomotive, an optimum with respect to performance, availability, wear and energy efficiency can be achieved. The paper presents the control strategies in multiple traction with different trainbusses (ZMS, WTC UIC etc.) in mixed configurations, control methods in the vehicle and adhesion control of Bombardier TRAXX locomotives. Measurement results of track tests visualize the achieved results. [ABSTRACT FROM AUTHOR]

Bogies with independently rotating wheels (IRW) seem to be only a compromise because of missing space for an axle. In this paper the theory of track guiding by IRW is explained and it is shown that IRW had some advantages over wheelsets if there are used in narrow tram networks. Those cbnsiderations are proved by field data. It is obvious that tramcars with IRW are characterized with best comfort and less wear - if the particu­larities of that principle are respected. [ABSTRACT FROM AUTHOR]