Non-steady state modelling of wheel-rail contact problem

作者：Guiral A^*; Alonso A; Baeza L; Gimenez J G

来源：Vehicle System Dynamics, 2013, 51(1): 91-108.

DOI：10.1080/00423114.2012.713499

• wheel-rail contact
• non-steady state
• railway simulation
• variable normal load

Among all the algorithms to solve the wheel-rail contact problem, Kalker%26apos;s FastSim has become the most useful computation tool since it combines a low computational cost and enough precision for most of the typical railway dynamics problems. However, some types of dynamic problems require the use of a non-steady state analysis. Alonso and Gimenez developed a non-stationary method based on FastSim, which provides both, sufficiently accurate results and a low computational cost. However, it presents some limitations; the method is developed for one time-dependent creepage and its accuracy for varying normal forces has not been checked. This article presents the required changes in order to deal with both problems and compares its results with those given by Kalker%26apos;s Variational Method for rolling contact.

• 出版日期2013-1-1