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Simulation of the magnetic fied
Posted Dec 3, 2012, 3:32 PM EST AC/DC & Electromagnetics, Geometry, Modeling Tools, Parameters, Variables, & Functions Version 4.2a 3 Replies
I have one physical NdFeB magnet and I need to simulate this magnet in Comsol 4.2a, but I dont know exactly how to do it.
I know these parameters of the magnet:
Remanence Br = 1380 mT
Coercivity Hcb = 876 kA/m
Intrinic coercivity Hcj = 876 kA/m
Maximum Energy Product BHmax = 334 kJ/m3
Dimensions of the magnet (cylindric magnet): height = 5 mm; weight = 8,5 mm
The magnet is magnetized axially.
So I used 2D axisymmetric geometry for this shape of the magnet, entered dimensions and now... I tried used mfnc physics, but I dont know exactly, which of these physical parameters (Br, Hcb ...) should be used for modelling magnetic field around this magnet.
I wanted to use this formula for magnetization
M = (1/u0)*B-H
but I dont know, if the B and H in this formula is the same as Br and Hcb or Hcj of my magnet, or if I can simulate magnetic field without this parameter.
Please can anybody help me? Thank you very much.