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A variable friction centre plate

  • Turning maneuvers performed by railway cars, imply the development of steering forces at the wheel-track interface, whose magnitude depends on a set of properties and operating conditions related to the vehicle and to the infrastructure, including track´s turning radius and vehicle´s yaw resistance. Yaw resistance integrates two components. On the one hand, there is the yaw stiffness, as a function of the different vehicle suspension components. On the other hand, there is the dry friction at the centre plate. Such yaw resistance of the car´s bogies, has a two-contradictory effect on railway performance, as a flexible bogie reduces the level of the steering forces, but at the same time, it increases the probability of having hunting instability. A variable yaw resistance, with high values at straight track segments and low values at curved tracks, seems to be an interesting design. In this paper, a variable friction Center plate is proposed, aiming at maximizing the yaw resistance onTurning maneuvers performed by railway cars, imply the development of steering forces at the wheel-track interface, whose magnitude depends on a set of properties and operating conditions related to the vehicle and to the infrastructure, including track´s turning radius and vehicle´s yaw resistance. Yaw resistance integrates two components. On the one hand, there is the yaw stiffness, as a function of the different vehicle suspension components. On the other hand, there is the dry friction at the centre plate. Such yaw resistance of the car´s bogies, has a two-contradictory effect on railway performance, as a flexible bogie reduces the level of the steering forces, but at the same time, it increases the probability of having hunting instability. A variable yaw resistance, with high values at straight track segments and low values at curved tracks, seems to be an interesting design. In this paper, a variable friction Center plate is proposed, aiming at maximizing the yaw resistance on straight track segments, and minimizing such resistance at curved tracks. The conceptual design of this device is described, together with its ability to reduce the yaw torque. Benefits of this device, regarding the transport energy consumption and the magnitude of the steering forces, are estimated on the order of 1 to 10, when comparing the proposed design with the standard center plate design.zeige mehrzeige weniger

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Metadaten
Autor*innen:José A. Romero-Navarrete
Persönliche Herausgeber*innen:Frank Otremba
Dokumenttyp:Buchkapitel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Mechanisms and Machine Science
Jahr der Erstveröffentlichung:2019
Organisationseinheit der BAM:3 Gefahrgutumschließungen; Energiespeicher
3 Gefahrgutumschließungen; Energiespeicher / 3.2 Gefahrguttanks und Unfallmechanik
Verlag:Springer Nature Switzerland AG 2019
Jahrgang/Band:73
Erste Seite:3611
Letzte Seite:3620
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau
Freie Schlagwörter:Center plate; Railway damage; Steering forces; Transportation energy; Yaw resistance; Yaw stiffness
Themenfelder/Aktivitätsfelder der BAM:Infrastruktur
Infrastruktur / Fire Science
DOI:10.1007/978-3-030-20131-9_356
ISSN:2211-0984
ISBN:978-3-030-20130-2
ISBN:978-3-030-20131-9
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:15.07.2019
Referierte Publikation:Nein
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