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# IEE ring problem

- To: femm@yahoogroups.com
- Subject: IEE ring problem
- From: "ahmad_m_eid" <ahmad_m_eid@yahoo.com>
- Date: Fri, 12 Sep 2003 03:22:37 -0000
- User-agent: eGroups-EW/0.82

    Dear all

    I used FEMM in solving the attached ring problem.
    the attraction force I get is about 20 mN while the actual attraction
    force is 76.5 mN.

    I used Lorentz and Maxwell tensor they give nearly the same answer
    around 20 mN.

    I attached the problem and my solving in another email.
    Please comment on this problem.

    the problem found in :
    A. Benhama et all.," force and torque computation from 2D and 3D
    finite element field solutions", IEE Proc.-Electr. Power Appl., vol.
    146, No. 1, 1999.

    thanks a lot
    ahmad

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