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# Re: [femm] Solenoid Model

- To: <femm@yahoogroups.com>
- Subject: Re: [femm] Solenoid Model
- From: "sihang" <stsc_sh@sina.com>
- Date: Sat, 12 May 2001 00:15:53 +0800
- References: <D135CB6636D3D411B88C0008C75DFDD971C2DF@val4.hrtextron.textron.com>

    Hello Mike,

       I also get the same force value in femm(a bit more larger than you got). I checked it in Ansys that found the result in document was calculated with a convergence tol 1e-3, which in FEMM, solver's default convergence tol is 1e-8.
    So I resolved the model with a  convergence tol 1e-8, the force I got was changed to -5.76N.  There hardly to say which result is more accurate on this model.

    Si hang

    ----- Original Message -----
    From: Achmad, Mike <machmad@hrtextron.textron.com>
    To: <femm@yahoogroups.com>
    Sent: Friday, May 11, 2001 5:47 AM
    Subject: RE: [femm] Solenoid Model

    > Thanks for a useful example.  I have run the solenoid model with the FEMM
    > and could only get a force of -6.335N vs. -5.69N according to the virtual
    > work method. Is this an acceptable difference or is this as the result of
    > the improper selection of the contour in the femmview?  There was also a
    > small difference in the inductance calculation (7.78E-2 vs 7.25E-2 with
    > Ansys?).
    >
    > Thanks again in advance for any comments.
    >

- References:
  - RE: [femm] Solenoid Model
    - From: "Achmad, Mike" <machmad@hrtextron.textron.com>

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