Open AccessAbsorbing interfaces in structural-acoustic coupled problems
Author(s) -
Walid Larbi,
JeanFrançois Deü,
Roger Ohayon
Publication year - 2008
Publication title -
european journal of computational mechanics
Language(s) - English
Resource type - Journals
eISSN - 2642-2085
pISSN - 2642-2050
DOI - 10.13052/remn.17.677-688
Subject(s) - poromechanics , biot number , dissipative system , finite element method , acoustic impedance , electrical impedance , acoustics , porous medium , work (physics) , materials science , mechanics , physics , structural engineering , engineering , porosity , mechanical engineering , composite material , quantum mechanics
This work concerns finite element formulations of structural-acoustic interior problems with dissipative interfaces. The main purpose is to establish the link between wall acoustic impedance models and poroelastic appraoches based on the Biot theory. The proposed method consists in determining the acoustic impedance parameters starting from intrinsic characteristics of the porous medium. This impedance is then introduced into the vibroacoustic finite element formulation to take into account the dissipative aspect of the fluid-structure interface.