A new method for the solution of the normal contact problem in the dynamic simulation of railway vehicles
Authors: Alonso, A1; Giménez, JG2
Source: Vehicle System Dynamics, Volume 43, Number 2, February 2005 , pp. 149-160(12)
Publisher: Taylor and Francis Ltd
Key:
- Free Content
- New Content
- Subscribed Content
- Free Trial Content
- Free Content
- New Content
- Subscribed Content
- Free Trial Content
Abstract:
Due to requirements related to computational efficiency, in the majority of railway dynamic simulators the Hertz theory is used for solving the normal problem in wheel/rail contact. This theory is based on a large number of assumptions. Particularly noteworthy is the assumed simplification that the undeformed distance between the bodies in contact can be assimilated by a quadratic function. There are many situations in which the undeformed distance cannot be represented by this kind of function. As such, the results obtained with Hertz theory in these cases are not accurate. In this paper, a new method for solving the normal problem that overcomes the above-mentioned limitation is presented. First, the exactness of the new method is tested with Hertzian cases. The results obtained are almost exact. Second, the results calculated with the new method in more general cases are compared with the ones obtained with the variational method of Kalker (more exact but computationally less efficient).Document Type: Research article
DOI: 10.1080/00423110500083049
Affiliations: 1: CEIT, Paseo M. Lardizabal 13, 20018, San Sebastian (Guipuzcoa), Spain 2: Construcciones y Auxiliar de Ferrocarriles, S.A, J. M. Itorria 26, 20200, Beasain (Guipozcoa), Spain
Key:
- Free Content
- New Content
- Subscribed Content
- Free Trial Content
- Free Content
- New Content
- Subscribed Content
- Free Trial Content
Click here for Page Help