000013140 001__ 13140
000013140 005__ 20161114160329.0
000013140 04107 $$aeng
000013140 046__ $$k2009-06-22
000013140 100__ $$aLarbi, W.
000013140 24500 $$aFinite element formulations for structural-acoustic internal problems with poroelastic treatment

000013140 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013140 260__ $$bNational Technical University of Athens, 2009
000013140 506__ $$arestricted
000013140 520__ $$2eng$$aWe propose in this paper to investigate and compare finite element formulations for structural-acoustic problems with soundproofing materials. The coupled system consists of an acoustic cavity with some of its walls covered by an elastic structure and coupled with a porous material. This material can be modeled by a tridimensional poroelastic finite element based on the Biot-Allard theory. Another approach consists of using acoustic normal impedance for modeling the wall absorption. Through an approximation of this impedance by a KelvinVoigt rheological model and using a new scalar unknown in the finite element formulation, the coupled problem can be written directly in time and frequency domains. Some examples are presented in order to illustrate and compare the proposed approaches.

000013140 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013140 653__ $$aVibroacoustic, Poroelastic material, Wall Impedance, Finite Element Method. Abstract. We propose in this paper to investigate and compare finite element formulations for structural-acoustic problems with soundproofing materials. The coupled system consists of an acoustic cavity with some of its walls covered by an elastic structure and coupled with a porous material. This material can be modeled by a tridimensional poroelastic finite element based on the Biot-Allard theory. Another approach consists of using acoustic normal impedance for modeling the wall absorption. Through an approximation of this impedance by a KelvinVoigt rheological model and using a new scalar unknown in the finite element formulation, the coupled problem can be written directly in time and frequency domains. Some examples are presented in order to illustrate and compare the proposed approaches.

000013140 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013140 720__ $$aLarbi, W.$$iDeu J., F.$$iOhayon, R.
000013140 8560_ $$ffischerc@itam.cas.cz
000013140 8564_ $$s366030$$uhttps://invenio.itam.cas.cz/record/13140/files/CD188.pdf$$yOriginal version of the author's contribution as presented on CD, section: Fluid-structure-soil interaction.
000013140 962__ $$r13074
000013140 980__ $$aPAPER