Publisher DOI: 10.1115/1.4007251
Title: Structural-acoustic vibration problems in the presence of strong coupling
Language: English
Authors: Voß, Heinrich 
Stammberger, Markus 
Issue Date: 28-Nov-2012
Source: Journal of Pressure Vessel Technology, Transactions of the ASME 135 (1): 11303 - (2013-01-01)
Abstract (english): 
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.
ISSN: 1528-8978
Institute: Mathematik E-10 
Document Type: Article
Journal: Journal of pressure vessel technology 
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