Attraction of the cylindrical magnet to the steel plate - QuickField simulation example
Cylindrical permanent magnet is pulled toward the ferromagnetic plate.
How to find force between cylindrical permanent magnets and steel plates?
Answer Typical applications Geometry
D = 2" (50.8 mm) - magnet diameter; Given Task Solution Result
* Reference: www.kjmagnetics.com.
Engineering question
Use an axisymmetric DC-magnetic model and integrate force around the magnet in air, leaving a small gap from the steel plate for accurate force calculation.
cylindrical permanent magnets, magnetic holding fixtures, magnet-steel interfaces
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Simulation problem
Problem Type
Axisymmetric problem of DC magnetics
L = 0.65" (16.51 mm) - magnet thickness;
t = 2" (50.8 mm) - plate thickness;
magnet grade N35, Hc = 954930 A/m, Br = 1.26 T;
relative magnetic permeability of plate μsteel = 1000.
Calculate the pulling force of the magnet toward the steel plate.
To calculate the pulling force accurately, and avoid integration along the edge dividing media with large difference in magnetic permeabilities, we place the magnet at a small distance δ = 0.005" (0.127 mm) from the steel plate. Integration contour is drawn in the air around the magnet.
Pull force
QuickField
542 N
Reference*
510 N (112.3 lb, 1 lb = 4.54 N)
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