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Hierarchical finite element modelling of Biot's equations for vibro-acoustic modelling of layered poroelastic media

by Hörlin, Nils-Erik

Abstract (Summary)
This thesis concerns three-dimensional finite element modelling of Biot's equations for elasto-acoustic modelling of wave propagation in layered media including porous elastic materials. The concept of hierarchical (p-version) finite elements are combined with various weak forms of Biot's equations. Computationally efficient methods providing accurate solutions of sound propagation in layered porous media are discussed. The research falls within the areas linear acoustics and numerical acoustics. Important applications of the developed methods may be found within vehicle interior acoustics, e.g. engineering design of damping treatment based on multiple layers of porous materials.
Bibliographical Information:

Advisor:

School:Kungliga Tekniska högskolan

School Location:Sweden

Source Type:Doctoral Dissertation

Keywords:TECHNOLOGY; Engineering physics; Engineering physics; finite element; hierarchical; Biot; porous material; vibro-acoustic; Teknisk fysik

ISBN:91-7283-927-9

Date of Publication:01/01/2004

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