Vibration excitation with electromagnet

[acoustic67]

Hello dear community

I m searching a solution to excite the vibration of a steel plate without contact. My idea was to use a kind of electromagnet and send a white/pink noise to generate vibration in the plate but i don't know really which one to buy for this project. The plate (30cm x 30cm) is in metal 0.001mm supported on the 4 sides. Do you have any idea or other proposals, please?
I thank you very much for your help!

 

[GregLocock]

Hmm, in the reverse case we use capacitance not magnetism. It'll be very easy to damage your foil.

 

[acoustic67]

Hmm, in the reverse case we use capacitance not magnetism. It'll be very easy to damage your foil.

Thank for your reply. I made a mistake in the thickness. It s 1mm and not 0.001mm.
So do you think electromagnet could work and which one?

 

[GregLocock]

Ah, yes I thought the thickness was a bit exotic. Sorry, i literally have no idea how to spec an electromagnet for that job. It rather depends on what you need it to do.

 

[IRstuff]

What are the requirements? Frequency, amplitude, etc.? Can't really expect any serious design solution without requirements.

 

[MintJulep]

Isn't this just a very inefficient speaker?

 

[acoustic67]

What are the requirements? Frequency, amplitude, etc.? Can't really expect any serious design solution without requirements.

I think a frequency range from 10 to 1000Hz, and amplitude just enough to excite the modes of the plates.

 

[acoustic67]

Isn't this just a very inefficient speaker?

You re right, i have already use a speaker but it doesn't work well but perhaps a modified speaker could work?

 

[MintJulep]

Try something like this.

No idea 1000 Hz would do.

Low Profile Electromagnets | Magnetool, Inc.

www.magnetoolinc.com

 

[acoustic67]

Try something like this.

No idea 1000 Hz would do.

Low Profile Electromagnets | Magnetool, Inc.

www.magnetoolinc.com

Thank you for your reply and sorry for my delay.

I have already checked this kind of magnet used to lift object (static - on/off) but i don't really know what is the behavior of this electromagnet in dynamic using it like a loudspeaker.
What do you think?

 

[IRstuff]

Buy one and test it is one option

 

[acoustic67]

Buy one and test it is one option

Yes! I keep you inform