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Cagliari, Sardinia, Italy
Venue: THotel, Cagliari, Sardinia
Railways 2016
The Third International Conference on
Railway Technology:
Research, Development and Maintenance
Cagliari, Sardinia, Italy
5-8 April 2016

Special Session Call for Papers:

Special Session: RW2016-S05
Friction in Wheel-Rail Contact: Modelling and Experimental Validation
Session Aims and Scope

The creep force characteristic of the wheel-rail contact is of high importance for the vehicle-track interaction. Thus, accurate models are essential for, e.g., reliable investigations of vehicle dynamics, optimization of traction and braking control devices, or predictions of safety levels, wear and damage on wheel and rail.

Classical models implemented in many multi body system simulation software packages use Coulombís law of friction and assume a constant coefficient of friction throughout the entire contact patch. Under certain conditions these models are not able to describe effects observed in reality like reduced stiffness in case of 3rd body layers or contaminated rails, falling friction at high creepages, dependency of the maximum friction on vehicle speed and normal loading, or the smooth transition between micro and macro creep domain. To take into account these effects several advanced models are available. However, there is still a lot of ongoing research on that issue focusing on a better understanding of the physics behind these effects.

This session comes out of extensive discussions within the so-called International Collaborative Research Initiative (ICRI) in which many experts from railway engineering are engaged. The session is open to and welcomes other participants as well. It aims at a deepening of the understanding of phenomena acting in the wheel-rail interface, affecting its frictional behaviour. The question is: what are the main influencing parameters on friction and how can this friction be predicted reliably?

The session should bring together researchers and experts from several fields, presenting their work and experience on wheel-rail friction modelling and experimentation, and will cover, but not limited to, the following topics:

  • Observations on wheel-rail creep force characteristics from lab and field tests (e.g. influence of creepages, vehicle speed, load, contact geometry, liquids (e.g. water), 3rd body layers and contaminants)
  • Steady state and unsteady state effects in the frictional behaviour
  • Physical understanding of the reasons behind the observed creep force effects
  • Advanced modelling of creep force effects
  • Investigations on the influence of creep force characteristics on vehicle-track interaction (e.g. vehicle dynamics, curving behaviour, traction and braking behaviour, wear and damage)

Organisers
For specific questions regarding the scope of this session please contact the organisers:
  • Dr K. Six, Virtual Vehicle Research Center, Graz, Austria, (klaus.six AT v2c2.at)
  • Dr E.A.H. Vollebregt, Delft University of Technology, The Netherlands (edwin.vollebregt AT vortech.nl)

Please note that papers that are found to fall outside the scope of this session may be considered for other sessions.

Abstract Submission
To submit abstracts for this special session, please follow the normal abstract submission procedure but please select "RW2016-S05" when asked "Is this paper part of a special session?"
Continue: Call-for-Papers