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Modal Representation of Stress in Flexible Multibody Simulation

Schwertassek, R. and Dombrowski, S. von and Wallrapp, O. (1999) Modal Representation of Stress in Flexible Multibody Simulation. Nonlinear Dynamics, 20, pp. 381-399. ISSN 0924-090X.

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Abstract

An application of the floating frame of reference formulation together with the nodal approach using quasi-comparison functions as shape functions allows an efficient analysis of stress in the flexible bodies of a multibody system. This is demonstrated using two simple examples. They are chosen to demonstrate the effects of various choices of shape functions and associated body reference frames. In the floating frame of reference formulation the equations of motion are linearized assuming the deformations to be small. The quasi-comparison functions, i.e. shape functions, can be selected in ways to increase the range of validity of the linearized equations of motion. The latter goal is achieved as well by so-called substructuring techniques. Combining both of the methodologies, one obtains efficient models for flexible multibody simulation.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2000,
Title:Modal Representation of Stress in Flexible Multibody Simulation
Authors:
AuthorsInstitution or Email of Authors
Schwertassek, R.UNSPECIFIED
Dombrowski, S. vonUNSPECIFIED
Wallrapp, O.Fachhochschule München
Date:1999
Journal or Publication Title:Nonlinear Dynamics
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:20
Page Range:pp. 381-399
ISSN:0924-090X
Status:Published
Keywords:Multibody simulation, flexible body modelling, modal coordinates, representation of stress
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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