Identification of wheel-rail contact forces based on strain measurement and finite element model of the rolling wheel
Paper in proceedings, 2012

In railway mechanics, the wheel-rail contact force is an important measure in the analysis of different kinds of rolling contact fatigue as well as being used for track condition monitoring. As the contact force cannot be measured directly in the field, one approach is to measure the strain at certain points on an instrumented wheel and upon employing signal processing techniques, extract an estimation of the contact force. However, the obtained force is restricted in terms of frequency content, i.e. the results are not accurate close to certain resonance frequencies of the wheel, [2]. In order to investigate and overcome the experienced problems, a 3-D Finite Element model of the wheel is used in an inverse identification procedure [7], whereby the proper dynamics of the system is taken into account. The method of signal processing using two Wheatstone bridges is compared with the inverse identification scheme by means of synthetic data.


load identification

inverse problems

railway mechanics



input estimation


Hamed Ronasi

Chalmers, Applied Mechanics, Material and Computational Mechanics

Håkan Johansson

Chalmers, Applied Mechanics, Material and Computational Mechanics

Fredrik Larsson

Chalmers, Applied Mechanics, Material and Computational Mechanics

Conference Proceedings of the Society for Experimental Mechanics Series. 30th IMAC, A Conference on Structural Dynamics, Jacksonville, 30 January-2 February 2012

2191-5652 (eISSN)

Vol. 6 169-177

Driving Forces

Sustainable development

Innovation and entrepreneurship

Areas of Advance


Subject Categories

Applied Mechanics

Vehicle Engineering





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