Validation of a finite element model for axle box acceleration at squats in the high frequency range

January 1, 2016 in

Journal Paper

Maria Molodova
Zili Li
Alfredo Núñez
Rolf Dollevoet

DOI 10.1016/j.compstruc.2014.05.005


Computers & Structures
Volume 141,

Publishing date:

axle box acceleration, dynamic simulations, finite element method, railway track inspection, squats

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Squats are associated with high frequency vibrations of the wheel–rail system and can be registered using axle box acceleration (ABA) measurements. In this paper a three-dimensional finite-element (FE) model is proposed to capture the dynamic features of the ABA related to squats in the high frequency range. The FE model is validated relying on a set of real-life ABA measurements at two characteristic rail surface defects (light and severe squats), located in a section of the railway network in Assen. The Netherlands. The FE model managed to properly capture the dynamic features in the range of frequencies up to 2000 Hz.