Railway Vehicle And Bridge Interaction:
Some Approaches And Applications
Author(s)
G. Mikheev, E. Krugovova & R. Kovalev
Abstract
The present paper describes the CAE-based approach for analysis of dynamics of
a coupled model of a flexible railway bridge and a train. The approach is being
implemented in Universal Mechanism (UM) software. The railway bridge is
considered as a flexible multibody system. The dynamics of flexible bodies are
simulated using data imported from finite element analysis (FEA) software. An
application of the approach to the investigation of dynamics of a railway vehicle
and a bridge supposes taking into account the flexibility of the bridge.
Comparison of flexible deflections and stresses for the full and reduced
FE-models for static and moving loads are presented. The simulation results for a
high-speed train on a bridge that is modelled as a reduced FE-model with 50, 100
and 200 flexible modes, as well as comparison of simulation results for separate
and coupled approaches to vehicle-bridge interaction (VBI), are shown.
Keywords: vehicle-bridge interaction, flexible bridge model, moving load.
1 Introduction
Computer simulation is an effective approach to analyze the dynamics of railway
bridges under train motion along them [1–4]. The main object of investigations
can be both a bridge and a railway vehicle. From the point of view of bridges,
purposes of researches could be the detection of resonance phenomena on
railway bridges, dangerous operation conditions such as train speed and weight,
specific bridge design and so on. As for high speed trains, a dynamic analysis is
necessary because of resonance phenomena of the structures due to regularly
spaced axle groups of the train. In the case of resonance, excessive bridge deck
Keywords
vehicle-bridge interaction, flexible bridge model, moving load
Related Book
Other papers in this volume
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