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# [femm] Current Density X-Y plot problems

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- Subject: [femm] Current Density X-Y plot problems
- From: "Marty Perry" <mperry@azcore.com>
- Date: Tue, 11 Jan 2000 18:11:23 -0800
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    Let me start off by saying that I am new to FEA and just blew the dust
    off my EM textbooks.

    I am attempting to look at the current distribution a winding of a
    planar inductor. I set up a simple model where the winding is just a
    single turn copper section on each side of a gapped E core. In the
    materials section I set J to be equal `x' for one side and equal to
    `-x' on the other side (where x is the current density to yield the
    desired current for the geometry). Next I performed an analysis at
    frequency and commanded an X-Y plot to look at the magnitude of J.

    All I can say is that the shape of the curve looks ok but the scale has
    me troubled. Way troubled! In the case where the current density is
    uniform in the Y axis should I not be able to integrate the current
    density over the length and back out the driving current?

    The ice is a little thin here so any help to get my self on track would
    be very appreciated.

    Thanks in advance.

    Marty

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