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Virtual test facilities for building acoustic predictions using FEM
Author(s) -
Wulkau Meike,
Langer Sabine
Publication year - 2011
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201110311
Subject(s) - transmission loss , transmission (telecommunications) , acoustics , finite element method , reverberation , computer science , sound transmission class , power (physics) , power transmission , set (abstract data type) , transfer matrix method (optics) , maximum power transfer theorem , matrix (chemical analysis) , sound power , soundproofing , component (thermodynamics) , engineering , structural engineering , materials science , telecommunications , physics , optics , quantum mechanics , composite material , thermodynamics , programming language , sound (geography)
The most important characteristic in building acoustics is the transmission loss which describes the insulation performance of a separating component. This quantity is defined by the ratio of inclined sound power to transmitted power. The transmission loss is usually measured in costly experimental set‐ups of either real size facilities or down scaled test models. In order to reduce the effort and to gain further insight into the complex behavior of wave propagation in coupled structure‐fluid systems, virtual test facilities using numerical methods (FEM) are established. An appropriate determination of the reverberation time is essential for obtaining good quality simulations. The results of the simulated transmission loss are presented and compared with common analytical prediction methods based on the transfer matrix method. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)