Modelling of suspension components in a rail vehicle dynamics context

Abstract

Suspension components play key roles in the running behaviour of rail vehicles, and therefore, mathematical models of suspension components are essential ingredients of railway vehicle multi-body models. The aims of this paper are to review existing models for railway vehicle suspension components and their use for railway vehicle dynamics multi-body simulations, to describe how model parameters can be defined and to discuss the required level of detail of component models in view of the accuracy expected from the overall simulation model. This paper also addresses track models in use for railway vehicle dynamics simulations, recognising their relevance as an indispensable component of the system simulation model. Finally, this paper reviews methods presently in use for the checking and validation of the simulation model.

Friction self-oscillation decrease in nonlinear system of locomotive traction drive

“…During the tests of the support-axial traction drive with an elastic cog-wheel and a rubber-metal cross-arm [9,10], selfoscillations of a wheelset during boxing with frequency f 0 =80…85 Hz were followed by intensive subharmonic oscillations of an engine on a rubber-metal cross-arm with frequency (19…20 Hz) ~f 0 /4,…”

Evaluation of bogie centre bowl friction models in the context of safety against derailment simulation predictions

“…The calculated friction torque is subsequently used in the model of dry friction in the bogies-car body connection. From the available friction models described in the literature [1][2][3][4][7][8][9][10][11]14], three groups of models were selected on the basis of the representation of popular friction models used in rail vehicle simulation. The first model represents the static smooth Coulomb approach, the second model is related to the dynamic non-smooth rheological approach, and the third one is based on the static non-smooth Coulomb approach with a defined region of stiction.…”

3D Suspension Characterization of a Rapid Transit Vehicle Using a Multi-Body Dynamic Model

“…Dynamic modeling of suspension components is well described in the reference [2]. However, depending on the speeds and axle load properties of the rail vehicle, some of the suspension elements may not be functional.…”