AFMG Network Forum
AFMG Network Forum Index -> AFMG SoundFlow -> Soundflow materials
Post new topic  Reply to topic View previous topic :: View next topic 
Soundflow materials
PostPosted: Tue Feb 02, 2016 11:15 am Reply with quote
danijel.valentic
Member
 
Joined: 02 Feb 2016
Posts: 2




Hello,

I have a question regarding simulation of different materials. I have two materials that I would like to use for simulation, but I can't find proper information about them. One is Cellofoam R 615 / 616. It's a recycled foam basically made from PUR.
Another is Guttasilent Pb. It's two layers of reticulated polyethylene foam with lead sheet in between. I found lead as material in the Soundflow base, but I can't find reticulated polyethylene foam. Anyone did simulations with these products?
I only have material density for both products. Is it enough for reliable simulation or I need more info?

Best regards,
Danijel
View user's profile Send private message Visit poster's website
PostPosted: Wed Feb 03, 2016 11:13 am Reply with quote
Waldemar
Member
 
Joined: 05 Dec 2005
Posts: 112




Hi,
for absorber material you need at least the flow resistivity.
Some manufacturers publish those data on their web-page?

_________________
Best Regards
SDA, Waldemar Richert
View user's profile Send private message
PostPosted: Fri Feb 05, 2016 8:15 am Reply with quote
danijel.valentic
Member
 
Joined: 02 Feb 2016
Posts: 2




Thanks for answer, Waldemar.

Haven't found flow resistivity anywhere on the manufacturers website. Just material density. I requested additional info, but all info is about density, measured Rw curves and measured alpha absorption coefficients.
Is it possible to enter data from measured Rw curve and alpha directly in Soundflow to simulate material? My primary concern is using these materials in different sandwich panels to gain transmission loss. So, Rw is more important than alpha.
View user's profile Send private message Visit poster's website
PostPosted: Mon Feb 08, 2016 2:49 pm Reply with quote
Waldemar
Member
 
Joined: 05 Dec 2005
Posts: 112




Hi Danijel,

you can change the Flow Resistivity for an Absorber to find the measured Rw of an absorber layer (may be PUR foam). Save this Absorber then as estimated materal (PUR.mat) file.

_________________
Best Regards
SDA, Waldemar Richert
View user's profile Send private message
AFMG Network Forum Index -> AFMG SoundFlow
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
All times are GMT  
Page 1 of 1  

  
  
 Post new topic  Reply to topic  


Powered by phpBB © 2001-2003 phpBB Group
Theme created by Vjacheslav Trushkin
Variation by CodeWeavers and AFMG