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1. Railway dynamics
Defining the general characteristics of a traction unit, i.e. defining its performance, requires a thorough knowledge of the traction program it will be used for: types of trains to be towed and their mass, gradients to be climbed, desired accelerations, maximum speed, degraded traction speeds, etc.
In this section, we first set out to establish the fundamental equation of dynamics that enables us to calculate the necessary running forces that a traction unit must develop in order to tow a train. We will then see that the maximum effort a wheel can develop on a rail is quickly limited by the phenomenon of adhesion; a loss of adhesion results in the wheel spinning, which can compromise a start.
Finally, knowledge of these various values enables the designer to establish what is known as the effort/speed characteristic of the prime mover,...
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Railway dynamics
Electric traction power supply
Also in our database
Bibliography
Standards and norms
- Applications ferroviaires. Compatibilité électromagnétique - ENV 50121 - 01-01
- Généralités - ENV 50121-1 -
- Émission du système ferroviaire dans son ensemble vers le monde extérieur - ENV 50121-2 -
- Matériel roulant. Trains et véhicules complets - ENV 50121-3-1 -
- Matériel roulant. Appareils - ENV 50121-3-2 -
- Émission et immunité des appareils de signalisation et de télécommunication...
Software tools
Esmeralda software owned by SNCF infrastructure ingiénierie
Websites
Chinese Railways International Scientific and Technological Information Research Institute, MOR http://www.chineserailwaysintl.com
Documentation Arcueil Institut National de Recherche sur les Transports et leur Sécurité http://www.inrets.fr
...
Events
EPE European Power Electronics Conference and Exhibition. Next conference in September 2009 in Barcelona.
WCRR World Congress on Rail Research every 2 to 3 years. Seoul 2008.
Regulations
Council Directive 96/48/EC of July 23, 1996 on the interoperability of the trans-European high-speed rail system.
Directive 2001/16/EC of the European Parliament and of the Council of March 19, 2001 on the interoperability of the conventional rail system.
Directive 2008/57/EC of the European Parliament and of the Council of June 17, 2008 on the interoperability of the rail...
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