Flexible Bodies with Thermoelastic Properties in Multibody Dynamics
Heckmann, Andreas and Arnold, Martin
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).
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)|
|Title:||Flexible Bodies with Thermoelastic Properties in Multibody Dynamics|
|Authors||Institution or Email of Authors|
|Arnold, Martin||Martin-Luther Universität Halle-Wittenberg|
|Journal or Publication Title:||Proceedings of the Multibody Dynamics 2007|
|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)|
|Institutes and Institutions:||Institute of Robotics and Mechatronics > System Dynamics and Control (former Control Design Engineering)|
|Deposited On:||30 Oct 2008|
|Last Modified:||12 Dec 2013 20:07|
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