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# ring magnet

- To: femm@egroups.com
- Subject: ring magnet
- From: ahmet Cansiz <ac319@eng.cam.ac.uk>
- Date: Tue, 28 Nov 2000 14:33:17 +0000

    Dear femm experts,
    I am trying use femm to model a problem which I am not successful so
    far: I have two disk shaped ring magnets, both of them are magnetized
    along the symmetry axis. The outer diameter of small magnet is less than
    the inner diameter of big magnet (about 1-2 mm) so that the small magnet
    can fit inside the big magnet.
    Question: Is it possible to model this configuration with femm. For
    example I want to fix the position of small magnet and position the big
    magnet in a way that both magnet's rotation axis coincides. If I move
    outer magnet along to rotation axis and parallel to rotation axis is it
    possible to measure relative vertical and lateral forces? Can femm do 3d
    configuration, or can the existing one be modified to do 3d ?
    best regards

    Ahmet Cansiz
    Cambridge University
    IRC in Superconductivity

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