QuickField

A new approach to field modelling

Main >> >> Repelling of the block magnets

Repelling of the block magnets

QuickField simulation example

Two rectangular prism shaped permanent magnets repel one another.

Problem Type
Plane-parallel problem of magnetostatics

Geometry
Two rectangular prism shaped permanent magnets Calculate the repelling force between two brick magnets δ l w t Permanent magnet

w=1.5" (38.1 mm) - magnet width;
t=0.25" (6.35 mm) - magnet thickness;
L=0.25" (6.35 mm) - magnet length;
δ=0.5" (12.7 mm) - gap between the magnets.

Task
Calculate the repelling force between two magnets.

Solution
To calculate the correct result an integration contour is drawn in the air around one of the magnets.

Result
Two rectangular prism shaped permanent magnets simulation

Repelling force
QuickField 3.30 N
Reference* 3.50 N (0.77 lb, 1 lb = 4.54 N)

* Reference: www.kjmagnetics.com.