Main >>Applications >> Sample problems >> Repelling of the cylindrical magnets
Two coaxial cylindrical permanent magnets repel one another.
Axisymmetric problem of magnetostatics
D = 2" (50.8 mm) - magnet diameter;
l = 0.65" (16.51 mm) - magnet thickness;
δ=0.5" (12.7 mm) - gap between the magnets;
magnet grade N35, Hc = 954930 A/m, Br = 1.26 T.
Calculate the repelling force between two coaxial cylindrical magnets.
To calculate the correct result an integration contour is drawn in the air around one of the magnets.
Magnetic field lines and mechanical force calculation
153 N (33.77 lb, 1 lb = 4.54 N)
* Reference: www.kjmagnetics.com.