Author(s)

S. Stichel

Abstract

The influence of underframe structural flexibility on the hunting behaviour of a freight wagon Sebastian Stichel Royal Institute of Technology (KTH), Railway Technology, Stockholm, Sweden. Abstract Within a research project at KTH simulation models of freight wagons were established. During investigations it turned out that the flexible properties of the underframe probably cannot be neglected in the models. Therefore a FE-model of an underframe of a two-axle freight wagon was built up. The most important eigenmodes are incorporated into a multibody vehicle model. Comparisons with measurements and some parameter studies are presented. 1 Introduction Since some years a research project is going on at KTH with the aim to increase the understanding of the running behaviour of freight wagons. Background to the project is, on the one hand, the planned increase of axle loads and speeds for freight traffic on Swedish main lines. On the other hand, it is well known that the ru

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