A finite element model to simulate the physical mechanisms of wear and crack initiation in wheel/rail contact
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in: Wear, Jahrgang 366-367.2016, Nr. 15 November, 09.06.2016, S. 78-83.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - A finite element model to simulate the physical mechanisms of wear and crack initiation in wheel/rail contact
AU - Daves, Werner
AU - Kubin, Wilhelm
AU - Scheriau, Stephan
AU - Pletz, Martin
PY - 2016/6/9
Y1 - 2016/6/9
N2 - The presented work describes firstly the wear and crack initiation mechanism using metallographic investigations of deformed surfaces by rolling sliding wheel/rail contact. Secondly, a multi-scale finite element model is presented which allows the simulation of the deformation process near the surface of a rail under rolling sliding contact. It is necessary to model the roughness of the surfaces of wheel and rail to obtain a realistic deformation state which is comparable to experiments. Furthermore, the realistic stick-slip behaviour of a rolling sliding wheel along a rail is considered. Regarding these aspects of wheel/rail contact a realistic deformation picture with near quantitative amounts of plastic shear strains from micrometre to millimetre range can be predicted. The numerical results obtained using the multi-scale model can be compared to metallographic observations and deliver a satisfying match.
AB - The presented work describes firstly the wear and crack initiation mechanism using metallographic investigations of deformed surfaces by rolling sliding wheel/rail contact. Secondly, a multi-scale finite element model is presented which allows the simulation of the deformation process near the surface of a rail under rolling sliding contact. It is necessary to model the roughness of the surfaces of wheel and rail to obtain a realistic deformation state which is comparable to experiments. Furthermore, the realistic stick-slip behaviour of a rolling sliding wheel along a rail is considered. Regarding these aspects of wheel/rail contact a realistic deformation picture with near quantitative amounts of plastic shear strains from micrometre to millimetre range can be predicted. The numerical results obtained using the multi-scale model can be compared to metallographic observations and deliver a satisfying match.
KW - Crack initiation
KW - Finite element
KW - Surface deformation
KW - Wear
KW - Wheel/Rail
UR - http://www.scopus.com/inward/record.url?scp=84994812695&partnerID=8YFLogxK
U2 - 10.1016/j.wear.2016.05.027
DO - 10.1016/j.wear.2016.05.027
M3 - Article
AN - SCOPUS:84994812695
VL - 366-367.2016
SP - 78
EP - 83
JO - Wear
JF - Wear
SN - 0043-1648
IS - 15 November
ER -
