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Flexible Multibody Simulation and Choice of Shape Functions

Schwertassek, R. and Wallrapp, O. and Shabana, A.A. (1999) Flexible Multibody Simulation and Choice of Shape Functions. Nonlinear Dynamics, 20, pp. 361-380. ISSN 0924-090X.

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Abstract

The approach most widely used for the modelling of flexible bodies in multibody systems has been called the floating frame of reference formulation. In this methodology the flexible body motion is subdivided into a reference motion and deformation. The displacement field due to deformation is approximated by the Ritz method as a procuct of known shape funcitons and unknown coordinates depending on time only. The shape functions may be obtained using finite-element-models of flexible bodies in multibody systems, resulting in a detailed system representation and a high number of system equations. The number of system equations of such a nodal approach can be reduced considerably using a modal representation of deformation. This modal approach, however, leads to the fundamental problem of selecting the shape functions.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2000,
Title:Flexible Multibody Simulation and Choice of Shape Functions
Authors:
AuthorsInstitution or Email of Authors
Schwertassek, R.UNSPECIFIED
Wallrapp, O.Fachhochschule München
Shabana, A.A.University of Illinois
Date:1999
Journal or Publication Title:Nonlinear Dynamics
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:20
Page Range:pp. 361-380
ISSN:0924-090X
Status:Published
Keywords:Multibody simulation, flexible body modelling, interaction of multibody- and finite-element-codes, shape functions and quasi-comparison functions, nodal and modal coordinates
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W SY - Technik für Raumfahrtsysteme
DLR - Research area:Space
DLR - Program:W SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):W - Weiterentwicklung Robotik - Telerobotik und Autonomie (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics > Robotic Systems
Deposited By: elib DLR-Beauftragter
Deposited On:12 Nov 2007
Last Modified:06 Jan 2010 16:33

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