Simulating the membrane

arend-jan · 7th December 2007, 03:15 PM

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?

harry_at · 10th December 2007, 05:14 PM

Hi,

take a look at

http://www.freebyte.com/cad/fea.htm

Harry

Fabien Lefebvre · 26th March 2010, 10:57 AM

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.

geraldfryjr · 27th March 2010, 12:20 AM

falstad.com might have what your looking for.jer

Fabien Lefebvre · 27th March 2010, 09:53 AM

Quote:

Originally Posted by geraldfryjr

falstad.com might have what your looking for.jer

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) ) )

oublie · 27th March 2010, 10:41 AM

This might help you

Electrostatic Loudspeaker (ESL) Simulator

geraldfryjr · 27th March 2010, 04:08 PM

oublie,thanks for that link. I had found it a while back ,then I lost it and couldn't find it again. jer

7th December 2007, 03:15 PM	#1
arend-jan 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?

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10th December 2007, 05:14 PM	#2
harry_at diyAudio Member Join Date: Jun 2006 Location: Austria	Hi, take a look at http://www.freebyte.com/cad/fea.htm Harry

27th March 2010, 12:20 AM	#4
geraldfryjr diyAudio Member Join Date: Feb 2008 Location: Jackson,michigan	falstad.com might have what your looking for.jer

27th March 2010, 10:41 AM	#6
oublie diyAudio Member Join Date: May 2009 Location: Northern Ireland	This might help you Electrostatic Loudspeaker (ESL) Simulator

27th March 2010, 04:08 PM	#7
geraldfryjr 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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