Nonlinear permanent magnet - QuickField simulation example
A simulation of permanent magnet and a steel keeper in the air, performed with QuickField software.
How to calculate the maximum transverse flux density of a nonlinear permanent magnet and verify against the reference result?
Answer Typical applications Geometry
Given
Task
Solution
Results
Engineering question
Model the magnet inside a sufficiently large air region, find the maximum Y-directed flux density, and compare it with the ANSYS value.
permanent magnet assemblies, nonlinear magnetic circuits, magnet-steel systems
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Simulation problem
Problem Type
Plane-parallel problem of DC magnetics.
The permanent magnets are made of ALNICO, coercive force is 147218 A/m. The polarizations of the magnets are along vertical axis opposite to each other.
Find maximum flux density in Y-direction.
To avoid the influence of the boundaries while modelling the unbounded problem, we'll enclose the magnet in a rectangular region of air and specify zero Dirichlet boundary condition on its sides.
Flux density in nonlinear permanent magnet:
By, T
ANSYS
0.42
QuickField
0.44
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