Modelling vibro-acoustic behaviour of micro-perforated structures using patch transfer function approach

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

Research output: Journal article publicationJournal articleAcademic research

Abstract

Micro-perforated structures with a backing cavity is a device for providing efficient noise absorption. In a practical and industrial setting, the efficiency of Micro-Perforated Structure (MPS) may be influenced by the vibro-acoustic behavior of the surrounding systems, the shape of the micro-perforated structure as well as different kinds of excitation. In this paper, the Patch Transfer Functions (PTF) approach is proposed to model the MPS behaviour in such Complex Vibro-Acoustic Environment The PTF method 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 micro-perforations and the flexibility of the structures 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.
Original languageEnglish
Pages (from-to)3421
Number of pages1
JournalJournal of the Acoustical Society of America
Volume131
Issue number4
DOIs
Publication statusPublished - 12 Apr 2012

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