CAE Software【Femtet】Murata Software Co., Ltd.
Example1 Magnetic Field of Bar Magnet
General
-
The magnetic field created by a bar magnet is analyzed.
-
The vectors of the magnetic field and the magnetic flux density are solved.
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Unless specified in the list below, the default conditions will be applied.
Analysis Space
|
Item |
Settings |
|
Analysis Space |
3D |
|
Model unit |
mm |
Analysis Conditions
|
Item |
Settings |
|
Solvers |
Magnetic Field Analysis [Gauss] |
|
Analysis Type |
Static analysis |
|
Options |
N/A |
Model
A solid body of ferrite magnet (mag) is defined.
The magnetizing direction of the ferrite magnet is +Z by default.
That means the top of the magnet is the north magnet pole and the bottom is the south magnet pole.
Body Attributes and Materials
|
Body Number/Type |
Body Attribute Name |
Material Name |
|
0/Solid |
mag |
mag |
* Available from the Material DB
The material properties are set up as follows:
|
Material Name |
Tab |
Properties |
|
mag |
Permeability |
Material Type: Permanent Magnet |
|
Magnet |
Magnetization Strength: 0.5 |
Boundary Conditions
No setting.
Results
The vectors of the magnetic field in the air are shown below. The magnetic field in the magnet is hidden.
The vectors of the magnetic field in the magnet are shown below. The magnetic field in the in the air is hidden.
At the magnet poles, the directions of the magnetic field are reversed for the inside and the outside of the magnet.
The vectors of the magnetic flux density are shown below.
Inside the magnet, the directions of the magnetic flux are the reversal of those of the magnetic field.