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Applications >> Sample problems >> Attraction of the cylindrical magnetsAttraction of the cylindrical magnets
Two coaxial cylindrical permanent magnets are pulled to each other.
Problem type:
Axisymmetric problem of magnetostatics
Geometry:
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.
Given:
magnet grade N35, Hc = 954930 A/m, Br = 1.26 T;
Task:
Calculate the pulling force between two coaxial cylindrical magnets.
Solution:
To calculate the correct result an integration contour is drawn in the air around one of the magnets.
Result:
Pull force |
|
QuickField |
164 N |
Reference* |
153 N (33.77 lb, 1 lb = 4.54 N) |
* Reference: www.kjmagnetics.com.