Problem of Magnetics--Step-by-Step Description: Step 9

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Describing data for the permanent magnet is a bit more complicated. In addition to demagnetization curve, the direction of resistant magnetization should be specified by means of the vector of coercive force. Now we'll define the demagnetization curve for label ALNICO Up:

1. Double-click ALNICO Up item or click Properties in its context menu. The property editing dialog box appears.
2. Type 1 in any text box for components of magnetic permeability tensor. This is void action, the only purpose of which is to specify that the data for the label is not empty, so that other text boxes will become available.
3. In the Magnitude text box for coercive force, type 147218.
4. In the Direction box, type 90. Direction is counted counter-clockwise from the horizontal axis.
5. Click the Nonlinear box. This starts the B-H Curve Editor.

Note that the predefined point is now at (-147218, 0). It is exactly the first point from the table below. Now we can continue with adding all other points from the table. When this job is done, click the Close button to finish curve editing and return to property editing dialog. Then click OK button to finish editing data for label ALNICO Up.

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