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Geometric Stiffness Influence in Linearized Flexible Multibody Systems.

Wallrapp, O. (1990) Geometric Stiffness Influence in Linearized Flexible Multibody Systems. In: Proceedings 8th IMAC Conference.. 8th IMAC Conference, 29 January - 1 February 1990,.

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Abstract

For simulations of flexible multibody systems (MBS) the theory of elasticity and the Rayleigh-Ritz assumption are used. In case of vehicle system dynamics the total body motion can be subdivided into a known large reference motion and a small deviation. The deviation will be described by a linearized rigid body motiuon and a linearized elastic deformation. For a correct development of the equations of motion the nominal state of the MBS must be in equilibrium. Nominal forces, torques and stresses result in geometric stiffness terms of the system equations. The paper discusses various alternatives for incorporating these terms; it is suggested to derive the geometric stiffness terms by using the equilibrium of the forces and stresses of the deflected and deformed bodies. The method is demonstrated by a flexible beam example.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1990, note=2201006,
Title:Geometric Stiffness Influence in Linearized Flexible Multibody Systems.
Authors:
AuthorsInstitution or Email of Authors
Wallrapp, O.UNSPECIFIED
Date:1990
Journal or Publication Title:Proceedings 8th IMAC Conference.
Status:Published
Keywords:Stiffness, Multibody Systems
Event Title:8th IMAC Conference, 29 January - 1 February 1990,
HGF - Research field:UNSPECIFIED
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:no assignment
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics > Institut für Dynamik der Flugsysteme
Deposited By: elib DLR-Beauftragter
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 06:46

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