Attraction of the ring-shaped magnets - QuickField simulation example
Two coaxial permanent ring-shaped magnets are pulled to each other.
How to find attraction force between coaxial ring magnets?
Answer Typical applications Geometry
D1 = 2" (50.8 mm) inner diameter of the ring magnet; Given
Task Solution
Result
* Reference: www.kjmagnetics.com.
Engineering question
Set up an axisymmetric QuickField DC Magnetics problem for coaxial ring magnets and evaluate attraction force from computed field results.
coaxial ring magnets, permanent magnet assemblies, axial magnet interaction systems
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Simulation problem
Problem Type
Axisymmetric problem of DC magnetics
D2 = 0.5" (12.7 mm) outer diameter of the ring magnet;
L = 0.75" (19.05 mm) - thickness of the magnet;
δ=0.5" (12.7 mm) - gap between the magnets.
magnet grade N35, Hc = 954930 A/m, Br = 1.26 T;
Calculate the pulling force between two coaxial ring-shaped permanent magnets.
For accurate calculation, the integration contour is drawn in the air around one of the magnet.
Magnetic field lines and mechanical force calculation
Pull force
QuickField
163 N
Reference*
175 N (38.51 lb, 1 lb = 4.54 N)
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