Sound absorption can be modelled as a surface boundary condition by means of the impedance elements in B2000 or as a volume by means of the Limp elements. Both methods are simplifications of a porous material. The Biot theory allows a more complete description of the sound absorbing material and models the acousto-elastic interaction of the elastic frame (skeleton) and the fluid inside. This theory is implemented in B2000 and the first results are presented. A short overview of the experimental sound reduction techniques at the laboratory is presented as well.
|Number of pages||8|
|Publication status||Published - 1998|
|Event||2nd B2000/MEMCOM Workshop 1998 - Manno, Switzerland|
Duration: 5 Nov 1998 → 6 Nov 1998
|Workshop||2nd B2000/MEMCOM Workshop 1998|
|Period||5/11/98 → 6/11/98|
van der Eerden, F. J. M., Spiering, R. M. E. J., & Tijdeman, H. (1998). Sound Attenuation: Implementation of the Biot Theory. 1-8. Paper presented at 2nd B2000/MEMCOM Workshop 1998, Manno, Switzerland.