Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Modelling a permanent magnet

Please login with a confirmed email address before reporting spam

Hi,
I am a beginner trying to use comsol. How am I supposed to model several magnets with alternating poles (North and South). Four magnets in a circular array. And then to find the magnetic force acting on an iron shaft that passes through (a linear motion) these four magnets.


1 Reply Last Post 25 ott 2016, 13:57 GMT-4
Nirmal Paudel COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 8 years ago 25 ott 2016, 13:57 GMT-4
Hi Delika,

For modeling a rotation, you might want to use the "Rotating Machinery, Magnetic" interface in AC/DC Module similar to the generator example below:
www.comsol.com/model/generator-in-2d-2122
In 3D, similar to the tutorial example:
www.comsol.com/model/rotating-machinery-3d-tutorial-10437
For radial or azimuthal magnetization and also for calculation of force/torque, the magnetic gear examples might be useful.
www.comsol.com/blogs/modeling-magnetic-gears-in-comsol-multiphysics/

Best Regards,
Nirmal
Hi Delika, For modeling a rotation, you might want to use the "Rotating Machinery, Magnetic" interface in AC/DC Module similar to the generator example below: https://www.comsol.com/model/generator-in-2d-2122 In 3D, similar to the tutorial example: https://www.comsol.com/model/rotating-machinery-3d-tutorial-10437 For radial or azimuthal magnetization and also for calculation of force/torque, the magnetic gear examples might be useful. https://www.comsol.com/blogs/modeling-magnetic-gears-in-comsol-multiphysics/ Best Regards, Nirmal

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.