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Mechanical free energy devices => mechanic => Topic started by: Low-Q on April 04, 2007, 04:46:34 PM

Title: Help with Femm 2D application
Post by: Low-Q on April 04, 2007, 04:46:34 PM
Hi,

I have drawn a toroid in femm2D. Then I want this toroid to be a magnet which is radial magnetized from inside out.
Is this possible to do in femm?

It's time consuming, making several small magnets where the poles are pointing outwards...

Br.

Vidar
Title: Re: Help with Femm 2D application
Post by: Omnibus on April 04, 2007, 05:28:39 PM
No, it's not possible. Neither is it  possible in Maxwell which is a way more advanced a program. Unfortunately, you have to assemble your radially magnetized toroid from smaller segments.
Title: Re: Help with Femm 2D application
Post by: dutchy1966 on April 05, 2007, 09:24:05 AM
It is possible! just setup one magnet in direction 0 degrees and use copy/rotate around origin 0,0 (if that is your center of the toroid). Use e.g. 10 degree stepping 36 copies.
Can be done in like 30 seconds....

regards

Robert
Title: Re: Help with Femm 2D application
Post by: Omnibus on April 05, 2007, 09:40:16 AM
This is what I said. The only way to make a radially magnetized toroid is to make it up from segments. It is not the time of making it from segments that matters. The problem is that it will only approximate a radially magnetized toroid.
Title: Re: Help with Femm 2D application
Post by: Nali2001 on April 05, 2007, 01:21:30 PM
Hmm I kind of wonder if such a magnet can even be made in the real world.
Title: Re: Help with Femm 2D application
Post by: Omnibus on April 05, 2007, 01:29:05 PM
Yes, it can but you have to pay additionally for it to be made. It is not a standard item. There are several ways of making it and the cheapest is, again, from segments.