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Mass Vibrator using a Neodymium cylinder

  1. Nov 7, 2007 #1
    This is an electrical question but bear with me for some background.

    I have a project creating an epoxy based granite material.
    The sphere packing density is quite high with aggregate sizes from 2 to 600 microns.
    So that means I'm left with a very thick mix.
    Plus the added complication of doing this in a vacuum.

    Requirements:

    I need to make a shaker/vibrator (freq from 20 to 200 Hz).
    Using a motor to vibrate has been tried and it overheats... go figure :)!

    Materials:
    1 inch diam x 2 inch long Neodymium magnet.
    Lots of magnet wire and even a coil winder.

    Supposition:
    It seems to me that I could mount magnet to base to vibrate, then create a coil around the magnet (with suitable separation) and drive that? I can dissipate the heat with a simple water jacket created from aluminum tubing and encapsulate that with an epoxy mixture designed to conduct heat which would be mounted to the rack in the chamber.

    Question:
    Is it possible to create a simple voice coil using a cylindrical magnet?
    If so given almost 13000 Gauss, how do I calculate the coil parameters (windings,gauge,amps,voltage).

    Or do I need to resort to using Axially magnetized magnet like a speaker?

    Or perhaps there are other idea out there to help me solve this problem.

    Thanks,
    Jack
     
    Last edited: Nov 7, 2007
  2. jcsd
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