Simulating the membrane - diyAudio
 Simulating the membrane
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 7th December 2007, 03:15 PM #1 diyAudio Member   Join Date: May 2006 Location: Netherlands Simulating the membrane Has anyone simulated the behaviour of a membrane with for example finite element analysis? I like to do so. Any software packages out there (preferable open source) that can do the job? Or do I have to write my own?
 10th December 2007, 05:14 PM #2 diyAudio Member   Join Date: Jun 2006 Location: Austria Hi, take a look at http://www.freebyte.com/cad/fea.htm Harry
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Quote:
 Originally Posted by arend-jan Has anyone simulated the behaviour of a membrane with for example finite element analysis? I like to do so. Any software packages out there (preferable open source) that can do the job? Or do I have to write my own?
The equivalent air mass being added to membrane mass being significant, you will need 3D finite element analysis. Which makes it more complex.

I have started a more simple approach, a simple excel sheet, with this unique target: compute the resonance frequency.
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 27th March 2010, 12:20 AM #4 diyAudio Member   Join Date: Feb 2008 Location: Jackson,michigan falstad.com might have what your looking for.jer
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Quote:
Indeed the membrane simulation is interesting (http://www.falstad.com/membrane/).

This corresponds to:
u(x, y, t) = Sum on m ( Sum on n ( Cm,n * sin(√(m^2 + n^2)ct) * sin(mx) * sin(ny) ) )
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 27th March 2010, 10:41 AM #6 diyAudio Member   Join Date: May 2009 Location: Northern Ireland This might help you Electrostatic Loudspeaker (ESL) Simulator
 27th March 2010, 04:08 PM #7 diyAudio Member   Join Date: Feb 2008 Location: Jackson,michigan oublie,thanks for that link. I had found it a while back ,then I lost it and couldn't find it again. jer

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