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Old 11th April 2008, 03:52 PM   #11
mrkahn is offline mrkahn  United States
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Join Date: Sep 2007
Quote:
Originally posted by Svante
The magnetics is not a problem. Anyway, stainless steel is not magnetic, right?

The bigger problem is the resonant properties of steel. It has very little losses, which probably will result in very narrow/loud resonances, possibly at rather high frequencies (depending on wall thickness).

It is a cool idea, but I would be careful to attach some sticky material to the inside of the box walls to increase the losses in the wall and thereby attenuating the resonances.

Hey Svante,
The wall thickness I plan to use is 1/2" steel (13mm) Very thick and heavy. I have a lot of this material left from a job and I can cut it on my waterjet. I plan on seam welding it into a closed chamber so no losses will occur.
That being said, I dont know what type of resonance I will be dealing with or at what frequencies? any thoughts on how to calculate or anticipate what I will end up with?
with that thickness of metal would an inner layer of damping compound be necesarry? I am scared of building a Bell that at a specific frequency it rings like crazy... Aluminum does not seem to do this in my previous experiments but steel has interesting audible characteristics when excited.
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