Variational characterization of eigenvalues of a non-symmetric eigenvalue problem governing elastoacoustic vibrations |
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Authors: | Markus Stammberger Heinrich Voss |
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Affiliation: | 1. Hamburg University of Technology, Hamburg, Germany
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Abstract: | Small amplitude vibrations of an elastic structure completely filled by a fluid are considered. Describing the structure by displacements and the fluid by its pressure field one arrives at a non-selfadjoint eigenvalue problem. Taking advantage of a Rayleigh functional we prove that its eigenvalues can be characterized by variational principles of Rayleigh, minmax and maxmin type. |
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