Prediction of sound fields in acoustic cavities coupled to absorptive structures due to vibrating surfaces

Martin Buchschmid, Gerhard Müller, Martina Pospiech

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In the scope of this contribution a model for the Fluid Structure Interaction (FSI) is presented, where absorptive structures can be considered. A special focus is layed on the interface coupling modes between absorber and fluid. For the simulation of the spatial resolution of the sound field within acoustic cavities techniques based on Finite Element formulations are used. To reduce the number of degrees of freedom a model reduction method, based on a Component Mode Synthesis (CMS), is applied. The cavity boundary conditions, e.g. compound absorbers made of homogenous plates and porous foams, are modeled using Integral Transform Methods (ITM) and appropriate material formulations. Wavenumber dependent impedances are computed for the absorptive structure and used for the coupling with the acoustic cavity adding interface coupling modes for the fluid and applying Hamilton's principle.

Original languageEnglish
Title of host publicationComputational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013
PublisherInternational Center for Numerical Methods in Engineering
Pages720-731
Number of pages12
ISBN (Print)9788494140761
StatePublished - 2013
Event5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2013 - Santa Eulalia, Ibiza Island, Spain
Duration: 17 Jun 201319 Jun 2013

Publication series

NameComputational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013

Conference

Conference5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2013
Country/TerritorySpain
CitySanta Eulalia, Ibiza Island
Period17/06/1319/06/13

Keywords

  • Component mode synthesis
  • Fluid structure interaction
  • Integral transform methods
  • Room acoustics

Fingerprint

Dive into the research topics of 'Prediction of sound fields in acoustic cavities coupled to absorptive structures due to vibrating surfaces'. Together they form a unique fingerprint.

Cite this