Abstract
High-speed trains in Germany often suffer from vibrations of the car body in the so-called medium-frequency range (30–300 Hz), also known as 100 Hz droning noise. The reason of this unpleasant phenomenon is the development of out-of-round wheels. This paper will discuss the influence of initial out-of-roundness of wheels as well as the influence of wheelset unbalances at high speeds on this wear process. Using a modular approach the model of the wheelset based on the method of flexible multibody systems is coupled to the rail with a complex wheelrail contact module. In order to account for the long-term wear effects on the wheels the mechanical model is extended by a long-term wear model using a wearfeedback loop in a different time scale. The presented results of wear simulations are subsequently used to discuss the influence of initial out-of-roundness and wheelset unbalances at high speeds on the order and magnitude of developing wear patterns.
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Meinders, T., Meinke, P. (2003). Rotor Dynamics and Irregular Wear of Elastic Wheelsets. In: Popp, K., Schiehlen, W. (eds) System Dynamics and Long-Term Behaviour of Railway Vehicles, Track and Subgrade. Lecture Notes in Applied Mechanics, vol 6. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-45476-2_9
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DOI: https://doi.org/10.1007/978-3-540-45476-2_9
Publisher Name: Springer, Berlin, Heidelberg
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