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Example 6: Magnetic Field Created by Electromagnet

General

• The magnetic field created by electromagnet consisting of loop coil and magnetic core is analyzed here.
   

• The vectors of the current density, the magnetic field and the magnetic flux density are solved.
   

• Unless specified in the list below, the default conditions will be applied.
   

• Obtain this session's project file. (Right-click and choose 'Save link as')




• Results will vary depending on Femtet version and the PC environment.

 

Analysis Space

Item	Settings
Analysis Space	3D
Model Unit	mm

 

 

Analysis Conditions

Item	Settings
Solver	Magnetic Analysis [Gauss]
Analysis Type	Static Analysis
Options	N/A

Model

A loop coil (coil) and a cylindrical magnetic core (core) are placed.

 

Body Attributes and Materials

Body Number/Type	Body Attribute Name	Material Name
0/Solid	core	core
1/Solid	coil	008_Cu *

* Available from the material DB

 

The material properties are set up as follows:

Material Name	Tab	Properties
core	Permeability	Relative Permeability 5×103

 

Body attribute is set up as follows to apply current to the loop coil.

Body Attribute Name	Tab	Settings
coil	Current	Waveform: Constant Current: 1 [A] Turns: 100 [Turns] Direction: Loop Coil/Magnetic Field Direction Specified Magnetic Field Vector: X=0, Y=0, Z=1

Boundary Conditions

No setting.

Results

Shown below are the vectors of the current density flowing through the loop coil.

 

The vectors of the magnetic field are shown below.

 

The vectors of the magnetic flux density are shown below.