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Representation of Geometric Stiffening in Multibody System Simulation

Wallrapp, O., Schwertassek, R., (1991) Representation of Geometric Stiffening in Multibody System Simulation. International Journal for Numerical Methods in Engineering, Vol. 32.

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Geometric, rotational or dynamic stiffening is a well and long known phenomenon in the analysis of flexible bodies. In multibody dynamics the effect has attracted attention only recently. The objective of this paper is to contribute to the understanding of the modeling of geometric stiffening in multibody system simulation. Today's methods for modeling the effect assume that the (applied) stresses in a flexible system body are zero in its reference configuration, in which it performs large overall motions. The corresponding inertial loads are shown to be balanced by constraint stresses. This can be seen easily when formulating the system equations of motion for nonzero reference stresses. As a result one obtains an efficient alternative to compute the geometric stiffening terms. The method increases the generaltity of flexible body models for multibody system simulation.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=1991, pages=25,
Title:Representation of Geometric Stiffening in Multibody System Simulation
AuthorsInstitution or Email of Authors
Wallrapp, O., Schwertassek, R., UNSPECIFIED
Journal or Publication Title:International Journal for Numerical Methods in Engineering
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:Vol. 32
Keywords:Dynamic stiffening; Flexible bodies; Constraint stresses.
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flexible Aircraft (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics > Robotic Systems
Deposited By: elib DLR-Beauftragter
Deposited On:14 Nov 2007
Last Modified:27 Apr 2009 06:47

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