FEMM/examples/magnetized_string.fem

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[Format] = 4.0
[Frequency] = 0
[Precision] = 1e-008
[MinAngle] = 25
[Depth] = 5
[LengthUnits] = millimeters
[ProblemType] = planar
[Coordinates] = cartesian
[Comment] = "single low-E steel string (1.168 mm gauge, 25.5-inch scale). NdFeB bar magnets touch each end of the string with N faces facing inward. Flux is injected from both ends, the two flows cancel at the midpoint, producing a null point in the centre of the rod."
[PointProps] = 0
[BdryProps] = 1
<BeginBdry>
<BdryName> = "A=0"
<BdryType> = 0
<A_0> = 0
<A_1> = 0
<A_2> = 0
<Phi> = 0
<c0> = 0
<c0i> = 0
<c1> = 0
<c1i> = 0
<Mu_ssd> = 0
<Sigma_ssd> = 0
<EndBdry>
[BlockProps] = 3
<BeginBlock>
<BlockName> = "Air"
<Mu_x> = 1
<Mu_y> = 1
<H_c> = 0
<H_cAngle> = 0
<J_re> = 0
<J_im> = 0
<Sigma> = 0
<d_lam> = 0
<Phi_h> = 0
<Phi_hx> = 0
<Phi_hy> = 0
<LamType> = 0
<LamFill> = 1
<NStrands> = 0
<WireD> = 0
<BHPoints> = 0
<EndBlock>
<BeginBlock>
<BlockName> = "NdFeB"
<Mu_x> = 1.05
<Mu_y> = 1.05
<H_c> = 915000
<H_cAngle> = 0
<J_re> = 0
<J_im> = 0
<Sigma> = 0.667
<d_lam> = 0
<Phi_h> = 0
<Phi_hx> = 0
<Phi_hy> = 0
<LamType> = 0
<LamFill> = 1
<NStrands> = 0
<WireD> = 0
<BHPoints> = 0
<EndBlock>
<BeginBlock>
<BlockName> = "Steel"
<Mu_x> = 2500
<Mu_y> = 2500
<H_c> = 0
<H_cAngle> = 0
<J_re> = 0
<J_im> = 0
<Sigma> = 5.8
<d_lam> = 0
<Phi_h> = 0
<Phi_hx> = 0
<Phi_hy> = 0
<LamType> = 0
<LamFill> = 1
<NStrands> = 0
<WireD> = 0
<BHPoints> = 0
<EndBlock>
[CircuitProps] = 0
[NumPoints] = 16
-100 -30 0 0
750 -30 0 0
750 30 0 0
-100 30 0 0
-30 -5 0 0
-30 5 0 0
0 -5 0 0
0 -0.584 0 0
0 0.584 0 0
0 5 0 0
647.7 -5 0 0
647.7 -0.584 0 0
647.7 0.584 0 0
647.7 5 0 0
677.7 5 0 0
677.7 -5 0 0
[NumSegments] = 18
0 1 -1 1 0 0
1 2 -1 1 0 0
2 3 -1 1 0 0
3 0 -1 1 0 0
4 5 -1 0 0 0
5 9 -1 0 0 0
4 6 -1 0 0 0
6 7 -1 0 0 0
7 8 -1 0 0 0
8 9 -1 0 0 0
10 11 -1 0 0 0
11 12 -1 0 0 0
12 13 -1 0 0 0
13 14 -1 0 0 0
14 15 -1 0 0 0
15 10 -1 0 0 0
7 11 -1 0 0 0
8 12 -1 0 0 0
[NumArcSegments] = 0
[NumHoles] = 0
[NumBlockLabels] = 4
325 20 1 -1 0 0 0 1 2
-15 0 2 5 0 0 0 1 0
662.7 0 2 5 0 180 0 1 0
325 0 3 1 0 0 0 1 0