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# PMSquare FEMM pics

- To: "ou-builders@yahoogroups.com" <ou-builders@yahoogroups.com>
- Subject: PMSquare FEMM pics
- From: "hartiberlin@pop3.freenet.de" <hartiberlin@pop3.freenet.de>
- Date: Mon, 11 Jun 2001 12:57:29 -0400
- Cc: "jlnlabs@egroups.com" <jlnlabs@egroups.com>, "femm@yahoogroups.com" <femm@yahoogroups.com>
- Reply-to: hartiberlin@pop3.freenet.de
- Sender: "hartiberlin@pop3.freenet.de" <hartiberlin@pop3.freenet.de>

    Hi,
    are my force calculations via the red
    bounding box line correct ?

    Enclosed are 2 pics, so you can see, what I am trying to do.
    I need the left runner stack consisting of 2 permanent
    magnets and s steel plateto be attracted into the track
    and going out smoothly without it being hold and repelled back.

    I hope you can help me with the force calculations.

    The force depends, if I draw the red line clockwise or counterclockwise.
    Is that right ?
    Also if I changethe mesh density, the force from the StressTensor
    varies with about a factor 10 to 1000 !
    Can this really be true ?

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Attachment: `pic01.gif`
Description: pic01.gif

Attachment: `pic02.gif`
Description: pic02.gif

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