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Flexible Bodies with Thermoelastic Properties in Multibody Dynamics

Heckmann, Andreas and Arnold, Martin (2005) Flexible Bodies with Thermoelastic Properties in Multibody Dynamics. In: Proceedings of the Multibody Dynamics 2007. ECCOMAS Thematic Conference, 2005-06-21 - 2005-06-24, Madrid (Spanien).

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In flexible multibody dynamics elastic deformations due to thermal expansion are generally omitted since thermal displacements are usually small compared to those caused by mechanical loads. However, if a mechanical process is associated with a substantial heat generation or load, the validity of this approach has to be reviewed. In a wide range of applications such as friction brakes, thermal buckling phenomena, machine tools with thermal loads, micro-mechanical devices with resistive heating, the heat energy flow and the thermoelastic coupling cannot be ignored. In order to cope with those applications a consistent theoretical framework is introduced by the present paper that enables a combined thermal and elastic analysis in multibody dynamics. The theory is based on a linear material constitution that is inserted into the weak field equations of a flexible and heat conducting body. The technical relevance of thermoelastic effects like the Gough-Joule effect, thermoelastic damping and thermally excited wave propagation is reviewed. As a consequence appropriate modelling assumptions can be deduced that enable a low-dimensional formulation of the displacement and temperature field by means of a modal multifield approach. This approach is applied to a high-performance machine tool with thermal loads caused by linear induction drives.

Document Type:Conference or Workshop Item (Paper)
Additional Information:LIDO-Berichtsjahr=2005,
Title:Flexible Bodies with Thermoelastic Properties in Multibody Dynamics
AuthorsInstitution or Email of Authors
Heckmann, AndreasUNSPECIFIED
Arnold, MartinMartin-Luther Universität Halle-Wittenberg
Journal or Publication Title:Proceedings of the Multibody Dynamics 2007
Refereed publication:Yes
In ISI Web of Science:No
Cuadrado, J. Garcia Orden, J.C., UNSPECIFIED
Keywords:thermoelasticity, flexible bodies, modal multifield approach, machine tool with thermal loads
Event Title:ECCOMAS Thematic Conference
Event Location:Madrid (Spanien)
Event Type:international Conference
Event Dates:2005-06-21 - 2005-06-24
Organizer:University of Madrid
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:30 Oct 2008
Last Modified:12 Dec 2013 20:07

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