A modified Kik–Piotrowski (MKP) model is proposed in this paper for an accurate and robust calculation of wheel–rail normal contact problem. The presented method is able to consider the relationship between the elastic deformation of a line and the normal pressure distribution within the contact patch. A novel shape correction method is put forward to correctly describe the elastic deformation of the contact patch. Taking the results estimated by Kalker’s variational method and Kik–Piotrowski method as references, the proposed method is validated by three contact cases, including the assumed standardised non-Hertzian contact and the two-point contact, as well as the contact behaviours based on three actual wheel–rail profiles. The simulation results indicate that, compared with Kik–Piotrowski method, the proposed MKP method achieves better agreement with Kalker’s variational method. Moreover, the MKP method can avoid the abrupt change of wheel–rail normal force due to the sudden transfer of the contact point, which contributes to a better computational stability.
A robust non-Hertzian contact method for wheel–rail normal contact analysis
Vehicle System Dynamics ; 56 , 12 ; 1899-1921
02.12.2018
23 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Non-Hertzian conformal contact at wheel/rail interface
IEEE | 1995
|Non-Hertzian Conformal Contact At Wheel/Rail Interface
British Library Conference Proceedings | 1995
|Determination of the wheel rail contact patch in semi-Hertzian conditions
Tema Archiv | 2005
|Determination of the wheel rail contact patch in semi-Hertzian conditions
Taylor & Francis Verlag | 2005
|Determination of the wheel rail contact patch in semi-Hertzian conditions
Online Contents | 2005
|