Magnetic Field of Bar Magnetexamples|products|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.
     

  • 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.