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The Running Behaviour of an Elastic Wheelset

Kaiser, Ingo and Popp, Karl (2004) The Running Behaviour of an Elastic Wheelset. ICTAM, 2004-08-15 - 2004-08-21, Warsaw, Poland.

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Abstract

The wheelset is the central element of a railway vehicle, responsible for support and guidance. For simulations of the low-frequent behaviour, the wheelsets are usually considered as rigid bodies. However, the wheel-rail contact is a strong nonlinear element which can be very sensitive even to small relative motions of wheel and rail. Therefore, the wheelsets and the rails are modelled as elastic bodies by using a modal synthesis. The required shape functions are obtained by Finite Element calculations. To investigate the influence of the structural flexibility, the simulation is performed with and without taking into account the elasticity of the wheelsets and the rails. The comparison of the results shows, that the so called critical speed drastically drops to lower travelling speeds, if the structural flexibility is taken into account. Beyond this critical speed, a dangerous limit cycle occurs. Furthermore, the structural flexibility leads to larger amplitudes of the motions.

Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:LIDO-Berichtsjahr=2004,
Title:The Running Behaviour of an Elastic Wheelset
Authors:
AuthorsInstitution or Email of Authors
Kaiser, IngoUNSPECIFIED
Popp, KarlUniversität Hannover
Date:2004
Status:Published
Keywords:running behaviour, elastic wheel set
Event Title:ICTAM
Event Location:Warsaw, Poland
Event Type:international Conference
Event Dates:2004-08-15 - 2004-08-21
Organizer:IUTAM
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:V SH - Verbesserung der Sicherheit im Verkehr (old)
DLR - Research area:Transport
DLR - Program:V SH - Verbesserung der Sicherheit im Verkehr
DLR - Research theme (Project):V - ViFa (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics > System Dynamics and Control (former Control Design Engineering)
Deposited By: Monika Klauer
Deposited On:21 Jul 2006
Last Modified:12 Dec 2013 20:02

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