I did a simple simulation in 2D or 3D, which include a block of soft magnetic material and a block of permanent magnet. I want to verify the force on soft magnetic material equals the force on permanent magnet. However, the simulation results indicate that they are huge different. I defined the names of the magnet and soft magnetic material from subdomain setting in comsol v3.5a, and then check the results from postprocessing regarding global data. I wonder what is the reason causing this different. I also check the tutorial model in which I just define the name for different material, and the conclusion is the same.
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