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Možný vznik tečných relaxačních kmitů v povrchové vrstvě železničního kola
Authors: Beneš Libor | Kaloč Rudolf | Guzman Ballivián
Year: 2004
Type of publication: článek ve sborníku
Name of source: Perspektivní technologie a materiály pro technické aplikace
Publisher name: Univerzita Pardubice a Asociace strojních inženýrů - MI Pardubice
Place: Pardubice
Page from-to: 22-30
Titles:
Language Name Abstract Keywords
cze Možný vznik tečných relaxačních kmitů v povrchové vrstvě železničního kola The aim of this paper is a study of the microstructure transformations that are induced by rolling contact friction and wear in the rail - wheel - system, from the materials as well as the mechanical point of view. By studying the surface changes the relationship between load strength and the induced microstructure changes in the surface and subsurface layers of railway wheels and rails were examined. These results were discussed in relation to both the deformation mechanism at the wear surface and the temperatures likely to be reached at the wheel-rail contact when the layer is formed. With respect to the intense damage of the contact bodies, the dangerous tangential motion of the superficial regions, so called ?relaxation vibrations? of a thin surface layer, was proposed as a cause of these studied mechanisms. kontakt kolo-kolejnice;povrchová vrstva;relaxační kmity
eng Possible origin of the tangential relaxation vibrations in surface layer of railway wheel The aim of this paper is a study of the microstructure transformations that are induced by rolling contact friction and wear in the rail - wheel - system, from the materials as well as the mechanical point of view. By studying the surface changes the relationship between load strength and the induced microstructure changes in the surface and subsurface layers of railway wheels and rails were examined. These results were discussed in relation to both the deformation mechanism at the wear surface and the temperatures likely to be reached at the wheel-rail contact when the layer is formed. With respect to the intense damage of the contact bodies, the dangerous tangential motion of the superficial regions, so called ?relaxation vibrations? of a thin surface layer, was proposed as a cause of these studied mechanisms. railway wheel-rail contact;surface layer;relaxation vibration

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