Optimization Of Special Freight Wagons With
Small Wheel Diameter
Author(s)
A. Rindi, D. Fioravanti, L. Pugi, M. Rinchi & J. Auciello
Abstract
A better integration and interoperability between rail and road transportation is a
key factor in order to reduce pollution and increase railway freight traffic.
Development of special freight wagons like \“SAADKMS” for the
transportation of trucks by railway is a successful solution that is meeting an
increasing consensus and popularity among many European countries. In order
to accelerate truck loading on wagons and reduce the limitation of normal
clearance (structure/vehicle/loading gauges) it is necessary to reduce the wheel
diameter as much as possible. This is not a drawback-free solution since an
excessive reduction of wheel diameter involves many troubles concerning the
stability of the vehicle, maximum axle load, wear of bearings and rolling
surfaces of rails and axles. Also designing the braking system is very
complicated because the reduced number of encumbrances available makes the
placement of internal disks on the axles difficult.
In order to solve these problems a very original solution concerning wheelset,
wheel profiles and more general bogie design have been applied in the
development of \“SAADKMS” freight wagons so the resulting vehicle is very
different from the conventional one. As a matter of fact, many past experiences
and know-how for conventional freight wagons are not applicable for this kind
of application, so numerical simulations are very important to deeply understand
the behaviour of the system and propose criteria for further optimization.
The authors of this paper have developed models on commercial multibody
software in order to simulate the behaviour of the \“SAADKMS” freight wagon
in different conditions (stability, steering performances). Also important results
such as position of the contact point or wear-number are shown to be useful
parameters for further optimization of the rolling surface profiles.
Keywords: SAADKMS, wheel, rail, wear, freight, wagon, intermodal.
Keywords
SAADKMS, wheel, rail, wear, freight, wagon, intermodal.
Related Book
Other papers in this volume
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