Summary
Dynamic vehicle–track interaction at high vehicle speeds is investigated in a frequency range from about 20 Hz to 3 kHz. The inclusion of wheel rotation in the vehicle model is investigated by implementing a structural dynamics model of a rotating wheelset in an existing simulation environment. Calculated wheel–rail contact forces using this comprehensive flexible wheelset model are compared with contact forces based on less detailed, non-rotating wheelset models. Load cases including broad-band wheel–rail excitation due to vertical rail irregularities (rail corrugation) and impact excitation caused by a local deviation from the nominal wheel radius (wheel flat) are considered. Viewed from the excitation point, each wheelset resonance peak of multiplicity two splits into two peaks; the separation of the two peaks increases with increasing rotational speed. If the wheelset model is excited at a frequency where two different mode shapes, due to the wheel rotation, have coinciding resonance frequencies, the contact force calculated for the rotating wheelset model differs significantly from those of the non-rotating models. Further, the use of a flexible rotating wheelset model is recommended for load cases leading to large magnitude contact force components in the high-frequency range (above 1.5 kHz). In particular, the influence of the radial wheel eigenmodes with two or three nodal diameters is significant.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Knothe, K., Grassie, S.L.: Modelling of railway track and vehicle/track interaction at high frequencies. Vehicle System Dynamics 22, 209–262 (1993)
Andersson, C.: Modelling and simulation of train–track interaction including wear prediction, PhD Dissertation, Department of Solid Mechanics, Chalmers University of Technology, Göteborg, Sweden (2003)
Thompson, D.J.: Wheel–rail noise generation, Part V: Inclusion of wheel rotation. Journal of Sound and Vibration 161, 467–482 (1993)
Fayos, J., Baeza, L., Denia, F.D., Tarancon, J.E.: An Eulerian coordinate-based method for analyzing the structural vibrations of a solid of revolution rotating about its main axis. Journal of Sound and Vibration 306, 618–635 (2007)
Baeza, L., Fayos, J., Roda, A., Insa, R.: High frequency railway vehicle–track dynamics through flexible rotating wheelsets. Vehicle System Dynamics 46, 647–662 (2008)
Nielsen, J.C.O., Igeland, A.: Vertical dynamic interaction between wheel and track – Influence of wheel and track imperfections. Journal of Sound and Vibration 187, 825–839 (1995)
Nielsen, J.C.O.: High-frequency vertical wheel–rail contact forces – validation of a prediction model by field testing. Wear 265, 1465–1471 (2008)
Thompson, D.J.: Railway Noise and Vibration. Elsevier, Oxford (2009)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer
About this paper
Cite this paper
Torstensson, P.T., Nielsen, J.C.O., Baeza, L. (2012). High-Frequency Vertical Wheel–Rail Contact Forces at High Vehicle Speeds –The Influence of Wheel Rotation. In: Maeda, T., et al. Noise and Vibration Mitigation for Rail Transportation Systems. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 118. Springer, Tokyo. https://doi.org/10.1007/978-4-431-53927-8_6
Download citation
DOI: https://doi.org/10.1007/978-4-431-53927-8_6
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-53926-1
Online ISBN: 978-4-431-53927-8
eBook Packages: EngineeringEngineering (R0)