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Modal‐based fluid structure coupling in room acoustics considering non‐deterministic properties
Author(s) -
Pospiech Martina,
Buchschmid Martin,
Rentrop Peter,
Müller Gerhard
Publication year - 2010
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201010246
Subject(s) - modal , coupling (piping) , benchmark (surveying) , acoustics , boundary element method , boundary value problem , probabilistic logic , acoustic impedance , electrical impedance , computer science , structural acoustics , mode coupling , physics , finite element method , mathematics , engineering , mathematical analysis , materials science , vibration , structural engineering , geology , mechanical engineering , geodesy , quantum mechanics , artificial intelligence , polymer chemistry , ultrasonic sensor
Nowadays fluid structure interaction methods gain more and more importance. For room acoustical problems the coupling to realistic boundary conditions, absorbers and reflectors, is still a remaining challenge in the optimization process for the frequency response of the acoustic volume. The following work will present a coupling method based on the Component Mode Synthesis and Hamilton's Principle for the steady state response of linear room acoustic problems. Therein realistic boundaries like absorbers are coupled with the help of their related frequency dependent impedances. For a more physical interpretation uncertain parameters are considered within the input data. Basic possibilistic and probabilistic concepts are applied on benchmark configurations to estimate the variation in frequency response functions from uncertain input data. (© 2010 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)