Modeling of micro-perforated panels effect in a complex Vibro-Acoustic Environment using Patch Transfer Function approach

L. Maxit, C. Yang, Li Cheng, J. L. Guyader

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

The micro-perforated panel with a backing cavity is a well known device for providing efficient noise absorption. This device has been thoroughly studied in the experimental conditions of an acoustic tube (Kundt tube) to quantify its absorption coefficient. In such situation, the system has one single dimension and the micro-perforated panel is excited by a normal incident plane wave. In a more practical and industrial setting, the efficiency of Micro-Perforated Structure (MPS) may be influenced by the vibro-acoustic behavior of the surrounding systems as well as different finds of excitation. In this paper, a Patch Transfer Functions (PTF) approach is proposed to model the MPS behaviour in such Complex Vibro-Acoustic Environment (CVAE). PTF is a substructuring approach which allows assembling different vibro-acoustic subsystems coupled through surfaces. The proposed PTF formulation of the MPS is capable of taking the microperforations and the flexibility of the panel into account and allows easy prediction of the efficiency of a MPS in a practical vibro-acoustic environment. In order to validate the present approach, PTF results are compared with experimental measurements on a test case from published literature.
Original languageEnglish
Title of host publication40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
Pages2266-2271
Number of pages6
Volume3
Publication statusPublished - 1 Dec 2011
Event40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011 - Osaka, Japan
Duration: 4 Sep 20117 Sep 2011

Conference

Conference40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
Country/TerritoryJapan
CityOsaka
Period4/09/117/09/11

Keywords

  • Acoustic absorption
  • Micro-perforated panel
  • Modeling

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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