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Applying Proper Orthogonal Decomposition Tools for Modal Identification of Coupled Structural-Acoustic Dynamic Fields

[+] Author Affiliations
Ioannis T. Georgiou, Christos I. Papadopoulos, Dimitris P. Servis

National Technical University of Athens

Paper No. IMECE2004-59689, pp. 219-227; 9 pages
doi:10.1115/IMECE2004-59689
From:
  • ASME 2004 International Mechanical Engineering Congress and Exposition
  • Noise Control and Acoustics
  • Anaheim, California, USA, November 13 – 19, 2004
  • Conference Sponsors: Noise Control and Acoustics Division
  • ISBN: 0-7918-4715-2 | eISBN: 0-7918-4178-2, 0-7918-4179-0, 0-7918-4180-4
  • Copyright © 2004 by ASME

abstract

To characterize the modal structure of the interaction dynamics of plate-like structures functioning as sound reducing systems, we apply the method of Proper Orthogonal Decomposition (POD) to analyze the dynamics of a room-plate-room coupled system. Given the finite element simulation as information on the dynamic response of this coupled system, it is shown that the POD technique identifies unique, optimum spatial patterns (modes) for all dynamic fields such as the sound pressure in the rooms and especially the vibration response of the plate. The Proper Orthogonal Decomposition (POD) technique proves to be a very effective identification tool for structural-acoustical systems.

Copyright © 2004 by ASME

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