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Structural-acoustic vibration problems in the presence of strong coupling
Publikationstyp
Journal Article
Date Issued
2012-11-28
Sprache
English
Author(s)
Voß, Heinrich
Institut
Volume
135
Issue
1
Article Number
11303
Citation
Journal of Pressure Vessel Technology, Transactions of the ASME 135 (1): 11303 - (2013-01-01)
Publisher DOI
Scopus ID
Free vibrations of fluid-solid structures are governed by unsymmetric eigenvalue problems. A common approach which works fine for weakly coupled systems is to project the problem to a space spanned by modes of the uncoupled system. For strongly coupled systems, however, the approximation properties are not satisfactory. This paper reports on a framework for taking advantage of the structure of the unsymmetric eigenvalue problem allowing for a variational characterization of its eigenvalues and structure preserving iterative projection methods. We further cover an adjusted automated multilevel substructuring (AMLS) method for huge fluid-solid structures. The reliability and efficiency of the method are demonstrated by the free vibrations of a structure completely filled with water. © 2013 American Society of Mechanical Engineers.
DDC Class
600: Technik