Calculus of double sided absorbers

[Esteban Zanardi]

Dear all, I would like to know if it is possible to insert in the model porous double sided absorbers. For instance, so called baffles (NOISE S.T.O.P. FABRISORB, Sonex illtec Nuvens).
I've been trying to do it but I couldn't make it work.

Thankyou in advance,
Esteban

[LAE Ifsttar Official]

Dear Esteban,

The only way to introduce absorbing material within I-Simpa is to define a material spectrum (1/3 octave bands) (not an analytical model)

- Goto the Project database

- Goto the Materials folder

- Goto the User folder

- Right click on User folder and select "New material"

- Define the Material Spectrum with the absorption/diffusion/transmission coefficients for each frequency band

In the Calculation parameters (for SPPS for example), select the corresponding frequency bands on which you want to realize numerical simulations.

Tell me if you experience any problems.

J. Picaut