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A Comparison of Reduced Order Modeling Techniques Used in Dynamic Substructuring
Roettgen, Daniel; Seeger, Benjamin; Tai, Wei Che et al.
2016In Proceedings of the International Modal Analysis Conference (IMAC) XXXIV
 

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Keywords :
reduced order modeling; dynamic substructuring; Craig-Bampton; Craig-Mayes; Craig-Chang
Abstract :
[en] Experimental dynamic substructuring is a means whereby a mathematical model for a substructure can be obtained experimentally and then coupled to a model for the rest of the assembly to predict the response. Recently, various methods have been proposed that use a transmission simulator to overcome sensitivity to measurement errors and to exercise the interface between the substructures; including the Craig-Bampton, Dual Craig-Bampton, and Craig-Mayes methods. This work compares the advantages and disadvantages of these reduced order modeling strategies for two dynamic substructuring problems. The methods are first used on an analytical beam model to validate the methodologies. Then they are used to obtain an experimental model for structure consisting of a cylinder with several components inside connected to the outside case by foam with uncertain properties. This represents an exceedingly difficult structure to model and so experimental substructuring could be an attractive way to obtain a model of the system.
Research center :
Sandia National Laboratories Nonlinear Mechanics and Dynamics (NOMAD) Research Institute
Disciplines :
Aerospace & aeronautics engineering
Mechanical engineering
Author, co-author :
Roettgen, Daniel;  University of Wisconsin > Engineering Physics > Structural Dynamics Research Group
Seeger, Benjamin;  Universität Stuttgart > Institut für Nichtlinear Mechanik
Tai, Wei Che;  University of Washington - UW > Department of Mechanical Engineering > Vibration and Dynamics Lab
Baek, Seung Hun;  University of Michigan > Department of Mechanical Engineering
Dossogne, Tilàn ;  Université de Liège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Allen, Matthew;  University of Wisconsin > Engineering Physics > Structural Dynamics Research Group
Kuether, Robert;  Sandia National Laboratories > Component Science and Mechanics
Brake, Matthew;  Sandia National Laboratories > Component Science and Mechanics
Mayes, Randall;  Sandia National Laboratories
Language :
English
Title :
A Comparison of Reduced Order Modeling Techniques Used in Dynamic Substructuring
Publication date :
January 2016
Event name :
International Modal Analysis Conference (IMAC) XXXIV
Event organizer :
Society for Experimental Mechanics (SEM)
Event place :
Orlando, United States - Florida
Event date :
du 25 janvier au 28 janvier 2016
Audience :
International
Main work title :
Proceedings of the International Modal Analysis Conference (IMAC) XXXIV
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
SNL - Sandia National Laboratories [US-NM]
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since 02 February 2016

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