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# Re: [FEMM] problem on plotting flux densityalong a curvature in the middle of airgap

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- Subject: Re: [FEMM] problem on plotting flux densityalong a curvature in the middle of airgap
- From: David Meeker <dmeeker@foster-miller.com>
- Date: Wed, 25 Feb 2004 11:10:22 -0500
- In-reply-to: <1F2CE8D4B0195E488213E8B8CCF71486020F6C14@saffron.cfs.le.ac.uk>
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`Cheng, Y. wrote:`

> `Dear All,`
> `I'm having a problem defining a contour as a curvature to allow me to plot flux density in the middle of the airgap in my machine model. How can I define a curved contour please?`

>     regards,
>     Mr. Y. Aaron Cheng

>     _______________________________________________
>     FEMM mailing list
>     FEMM@list.foster-miller.net
>     http://femm.foster-miller.net/mailman/listinfo/femm

> ``

`If you are defining the contour manually, first define a straight line between the endpoints of the desired arc. The press the <shift> key. A dialog will pop up that will allow you to enter the angle spanned by the arc. When you hit OK, the straight line gets replaced by an arc. If you want to do this programmatically via Lua, the mo_bendcontour(angle,anglestep) and eo_bendcontour(angle,anglestep) functions implement this functionality.`
`--
David Meeker
Senior Engineer
Foster-Miller, Inc.
350 Second Avenue
Waltham, MA 02451-1196
781-684-4070
781-890-3489 (fax)
dmeeker@foster-miller.com http://femm.foster-miller.com`

- References:
  - [FEMM] problem on plotting flux densityalong a curvature in the middle of airgap
    - From: "Cheng, Y." <yc6@leicester.ac.uk>

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