Dynamic Identification Of A
1:5 Scaled Railway Bogie On Roller Rig
Author(s)
N. Bosso, A. Gugliotta & A. SomÃ
Abstract
A Scaled Roller Rig is an experimental device to carry out laboratory tests on
railway vehicles. The advantages of this method consist of low costs, low testing
time and good repeatability. Different testing conditions, such as different
friction, wear of profiles and axle load can be easily reproduced. Due to this
reason many authors use roller rig to study railway dynamic, wear, noise and
other railway problems. This work describes the experimental tests carried out to
analyze the dynamical behaviour of a 1:5 scale railway bogie on a roller rig in
tangent track conditions. The Roller Rig has been designed and realized at
Politecnico di Torino and the first tests have been conducted on a single
suspended wheelset.
Tests performed on a single wheelset are used to validate the wheel/rail and
wheel/roller contact algorithm and to adjust the parameters of numerical models.
On the other hand the study of a complete railway bogie allows one to simulate
the behaviour of a real vehicle and can be used in the design phase of new
vehicles. For instance, it is possible to evaluate the effect of changes brought to
the suspension system on the running dynamics of the vehicle.
Keywords: wheel-rail, dynamics, contact, roller-rig.
1 Introduction
The use of Roller-Rig allows one to simulate the behaviour of real vehicles under
well known testing conditions. If the tests are performed on reduced scale
prototypes, it is possible to significantly reduce the costs.
Unfortunately the railway vehicle has a different behaviour on the track
respect on Roller Rig, this is mainly due to finite curvature of the rollers, which
modify the shape of the contact patch and add an instable gravitational effect
Keywords
wheel-rail, dynamics, contact, roller-rig.
Related Book
Other papers in this volume
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