Abstract
According to results of carried-out experiments and simulations, dry friction exposed to dither results in viscous–like, frequently linear damping. This means that dither smoothes dry friction as far as damping is concerned. One dithered system of technical importance is a railway freight wagon with friction dampers in the primary suspension developing two–dimensional dry friction. The dither exciting dampers are generated in rolling contact of wheel and rail. Employing proposed rheological model of 2D friction in simulations it has been shown that dither significantly influences ride dynamics of freight wagons.
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References
J. Piotrowski, W. Kik. A simplified model of wheel/rail contact mechanics for non-Hertzian problems and its application in rail vehicle dynamic simulations, Vehicle System Dynamics, 46, 1–2: 27–48, 2008.
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© 2009 Springer-Verlag Berlin Heidelberg
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Piotrowski, J. (2009). Smoothing Dry Friction by Medium Frequency Dither and Its Influence on Ride Dynamics of Freight Wagons. In: Grove Thomsen, P., True, H. (eds) Non-smooth Problems in Vehicle Systems Dynamics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-01356-0_17
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DOI: https://doi.org/10.1007/978-3-642-01356-0_17
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