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On an ALE-Approach for Rotating Elastic Structures

Kaiser, Ingo and Heckmann, Andreas and van der Linden, Frans (2007) On an ALE-Approach for Rotating Elastic Structures. In: Proceedings of the Multibody Dynamics 2007. ECCOMAS Thematic Conference, 2007-06-25 - 2007-06-28, Milano (Italy).

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Abstract

A new method for the description of rotating elastic structures is derived which is especially well suited for the description of coupled rotor-stator systems. The main idea is to eliminate the angle of the large rotational motion from the equations without neglecting the rotational velocity and the gyroscopic effects caused by it. This is done by describing the deformations in an intermediate frame. Assuming that the rotor is a cyclic structure, i.e. consisting of several identical segments which are arranged circularly, specific characteristics of the structural dynamics of a cyclic structure can be exploited. This leads to a transformation of the modal coordinates describing the deformations of the rotating body. The description is applied to a railway vehicle where the wheelsets are the rotors and the bogie frames and the car body is the stator. The wheelsets are modeled as elastic bodies. For this application, the description provides a simple structure of the equations of motion.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:On an ALE-Approach for Rotating Elastic Structures
Authors:
AuthorsInstitution or Email of Authors
Kaiser, IngoUNSPECIFIED
Heckmann, AndreasUNSPECIFIED
van der Linden, FransUNSPECIFIED
Date:2007
Journal or Publication Title:Proceedings of the Multibody Dynamics 2007
Refereed publication:Yes
In ISI Web of Science:No
Status:Published
Keywords:elastic rotor, cyclic structure, elastic multibody system
Event Title:ECCOMAS Thematic Conference
Event Location:Milano (Italy)
Event Type:international Conference
Event Dates:2007-06-25 - 2007-06-28
Organizer:ECCOMAS
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:other
DLR - Research area:Transport
DLR - Program:V - no assignement
DLR - Research theme (Project):V -- no assignement
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics > System Dynamics and Control (former Control Design Engineering)
Deposited By: Monika Klauer
Deposited On:30 Oct 2008
Last Modified:12 Dec 2013 20:29

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