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K. Six¹, A. Meierhofer¹, G. Trummer¹, C. Marte¹, G. Müller¹ B. Luber¹, P. Dietmaier² and M. Rosenberger¹

¹Virtual Vehicle Research Center, Graz, Austria
²Institute of Applied Mechanics, Graz University of Technology, Austria

Keywords: wheel-rail contact, plasticity, friction, rolling contact fatigue, modelling.

Abstract

Physical processes within the wheel-rail contact greatly influence the vehicle-track interaction in railway operation. Thus, prediction models are of great importance taking plasticity phenomena appropriately into account. Such plasticity phenomena generally occur in railway operation. Therefore, a new classification of plasticity phenomena is introduced: (1) "global" plastification in the order of hundreds of microns up to millimetres due to the general loading situation and (2) "tribological" plastification in the order of microns caused by surface effects (e.g. roughness) which is always accompanied by the wearing process. "Global" plastification occurs only during the first cycles and always gets into elastic shakedown, while "tribological" plasticity is a continuous process never reaching elastic shakedown. State of the art models do not take these effects sufficiently into account. Hence, a new overall wheel-rail contact and damage model (OCD model) has been developed.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	International Journal of Railway Technology ISSN 2049-5358 IJRT, Volume 5, Issue 3, 2016 Classification and Consideration of Plasticity Phenomena in Wheel-Rail Contact Modelling K. Six¹, A. Meierhofer¹, G. Trummer¹, C. Marte¹, G. Müller¹ B. Luber¹, P. Dietmaier² and M. Rosenberger¹ ¹Virtual Vehicle Research Center, Graz, Austria ²Institute of Applied Mechanics, Graz University of Technology, Austria doi:10.4203/ijrt.5.3.3 purchase the full-text of this paper Full Bibliographic Reference for this paper K. Six, A. Meierhofer, G. Trummer, C. Marte, G. Müller, B. Luber, P. Dietmaier, M. Rosenberger, "Classification and Consideration of Plasticity Phenomena in Wheel-Rail Contact Modelling", International Journal of Railway Technology, 5(3), 55-77, 2016. doi:10.4203/ijrt.5.3.3 Keywords: wheel-rail contact, plasticity, friction, rolling contact fatigue, modelling. Abstract Physical processes within the wheel-rail contact greatly influence the vehicle-track interaction in railway operation. Thus, prediction models are of great importance taking plasticity phenomena appropriately into account. Such plasticity phenomena generally occur in railway operation. Therefore, a new classification of plasticity phenomena is introduced: (1) "global" plastification in the order of hundreds of microns up to millimetres due to the general loading situation and (2) "tribological" plastification in the order of microns caused by surface effects (e.g. roughness) which is always accompanied by the wearing process. "Global" plastification occurs only during the first cycles and always gets into elastic shakedown, while "tribological" plasticity is a continuous process never reaching elastic shakedown. State of the art models do not take these effects sufficiently into account. Hence, a new overall wheel-rail contact and damage model (OCD model) has been developed. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to IJRT purchase this issue (price £80 +P&P)
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