QuickField

A new approach to field modelling

Main >> Applications >> Sample problems

Nonlinear permanent magnet

permanent magnet pulling force, magnetic flux distribution, magnetic FEA

A simulation of permanent magnet and a steel keeper in the air, performed with QuickField software.

Problem Type:
Plane-parallel problem of DC magnetics.

Geometry:
Nonlinear permanent magnet A simulation of permanent magnet and a steel keeper in the air, performed with QuickField software. Steel Steel ALNICO A B C D E F G H I J K L M N 10 cm 20 cm 40 cm 10 cm 20 cm 10 cm 10 cm

Given:
The permanent magnets are made of ALNICO, coercive force is 147218 A/m. The polarizations of the magnets are along vertical axis opposite to each other.
The demagnetization curve for ALNICO:

The B-H curve for the steel:

Task:
Find maximum flux density in Y-direction

Solution:
To avoid the influence of the boundaries while modelling the unbounded problem, we'll enclose the magnet in a rectangular region of air and specify zero Dirichlet boundary condition on its sides.

Results:
Flux density in nonlinear permanent magnet:

Flux density in nonlinear permanent magnet

Maximum flux density in Y-direction:

  By, T
ANSYS 0.42
COSMOS/M 0.404
QuickField 0.417
  • View simulation report in PDF
  • Download simulation files (files may be viewed using any QuickField Edition).
  • New version QuickField 6.4

    Product
    Order
    Evaluation request
    Editions
    Version history
    Packages
    Components
    Programming
    Consulting

    Applications
    Industrial
    Educational
    Scientific
    Sample problems
    Success stories
    Customers

    Support
    Webinars
    Virtual Classroom
    Online courses
    Customer login
    Glossary
    QuickField help
    FAQ

    Downloads
    QuickField Student Edition
    User manual
    Data Libraries
    Video
    Free tools

    News
    Product News
    Events
    Publications
    Subscription

    Contacts
    Tera Analysis info
    Resellers
    Contact us
    Online chat
    About us