AFMG Network Forum

opacheco · Member

Hi again,

How I can simulate in EASE the Spray Polyurethane Foam?.....This was impregnated in the ceiling and have 8 inch of thick for thermal treatment I suppose!!.
Has the EASE material database a similar material that I could use?

Thanks a lot again.
Opacheco

opacheco · Member

What material I can use for modeled in EASE??....the Polyurethane is 6 inch of thick.

Any comments?
Opacheco.

Tim · Member

You could try using "SPRAY ACOU" from the standard American>Full materials library, however I would expect a little more low frequency absorption due to the thickness of the material.

See if this helps.
Regards

opacheco · Member

Tim,

Thanks a lot for your help and take time for responses like these!!.....I will try that and I will consider that thick issue....I am thinking if I could to get the coeficient graph or octave discrete data for this specific material(poliuretane 6in or 8in thick), I can use it in order to add to the material data base and use it for more exact prediction...I suppose!!, but the manufacture don't have these data always....they are focused in termal data than acoustics data generally

What do you think?

Thanks again for your help
Opacheco.

AFMG Pedro Lima · Forum Moderator

Gentlemen,

It is rather usual for manufacturers providing the mechanical properties for the materials, such as Density, Poisson's coeficient, Flow Resistivity, etc., which are in general used for Civil Engineering applications.

However, based on those you can calculate (simulate) the acoustic properties for the materials (or a strcture with layers of materials) with AFMG SoundFllow. Among these are the absorption and reflection coefficients, transmission loss and complex input impedance.

More details can be found here: http://soundflow.afmg.eu/

Hope this helps,
Pedro

opacheco · Member

Thanks to all for comments! Very Happy

Opacheco.