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An Approach for the Representation of Piezothermoelastic Bodies in Multibody Dynamics

Heckmann, A. and Vaculin, O. (2004) An Approach for the Representation of Piezothermoelastic Bodies in Multibody Dynamics. Euromech 452, Advances in Simulation Techniques for Applied Dynamics, Halle(Saale), March 1-4 2004.

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Abstract

The consideration of the linearised displacement field of elastic bodies has become a state-of-the-art technique in multibody dynamics. For this task the modal approach has been applied with great success. Therefore, it is reasonable to extend the modal approach to a modal multifield approach if it is aimed to describe bodies with multiple distributed properties. That way not only the displacement field may be dicretised by the product of predefined time independent modal functions and time dependent coefficients but also an existing inhomogeneous temperature distribution or the electrical potential of an additional electrostatic field. In order to establish a closed description, the modal multifield approach is inserted into an extended Hamilton Principle and is connected to a thermodynamical potential. Thus, the field equations and the material constitution can be provided. As a result a coupled system of discretised field equations is composed. It may be solved efficiently combining specially adapted classical methods from multibody numerics with modular solution methods such as co-simulation. Beneath the outline of the theoretical framework the presentation gives some moderately complex verification examples. The capabilities of active damping by structure-integrated piezoceramic devices are demonstrated. The presented approach is also applied to the classical problem thermoelasticity. The simulation of a high precision tooling machinery with thermal loads emphasizes the significance of the approach for industrial scale problems.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=2004,
Title:An Approach for the Representation of Piezothermoelastic Bodies in Multibody Dynamics
Authors:
AuthorsInstitution or Email of Authors
Heckmann, A.UNSPECIFIED
Vaculin, O.UNSPECIFIED
Date:2004
Status:Published
Event Title:Euromech 452, Advances in Simulation Techniques for Applied Dynamics, Halle(Saale), March 1-4 2004
Organizer:Martin-Luther Universität Halle-Wittenberg
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Transport
HGF - Program Themes:other
DLR - Research area:Transport
DLR - Program:V FT - Fahrzeugtechnik
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics > System Dynamics and Control (former Control Design Engineering)
Deposited By: Monika Klauer
Deposited On:16 Sep 2005
Last Modified:12 Mar 2010 14:09

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