Learning Forum

[AhmedCfx]

Dear All

I’d like to simulate a cantilever beam with magnet and show how it’s effect on the natural frequency (the magnet) , how can I add magnetic force to these poles as shown in the attached image?

Best regards

[peteroznewman]

If you know a lot about magnetic material properties, you can create a Magnetostatic analysis to predict the static force on a ferrous metal plate, such as steel, near the poles of a permanent magnet. You have to mesh the air around the solid parts to carry the lines of magnetic flux.

You show the arrangement this way:

From my understanding of magnetic circuits, high forces are developed when the steel plate goes across the poles as I have sketched in green.

But perhaps you don't want to generate high forces. Maybe you want to generate eddy currents in the conductive steel plate and have the resistance to electron flow in the material act as a damper to the vibration.  Now you are talking about a very complex multi-physics model.

ANSYS Maxwell can solve a model like that, but that is not included in the free Student license.

 

[AhmedCfx]

Thank you sir, how can I add fixed support to the beam? Can I make static structural and coupling with the magneto-static?