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Calculating Halbach Array force

Calculating Halbach Array force

Calculating Halbach Array force

(OP)
So I'm thinking of this shock absorber involving magnets, but to reduce the weight as much as possible, I thought about using a halbach array of magnets to be able to repel as strongly as possible with the least amount of weight.

The only problem is that I haven't got a clue as of how to calculate how strong a halbach array would repel something!

So, are any of you familiar with the concept?

RE: Calculating Halbach Array force

(OP)
Oh and I forgot; Is it possible to set up a halbach array with non-cubical magnets?

RE: Calculating Halbach Array force

(OP)
Thanks for the reply, but that thread doesn't really concern the subject of halbach arrays, unless I missed something :S

RE: Calculating Halbach Array force

magnetic force --> r^2 --> increasing jerk
spring --> r --> constant jerk

The degree of jerk would be unacceptable for most applications

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RE: Calculating Halbach Array force

What about Magneto-Rheological (MR) Suspension?  Then you have control of the suspension.

http://www.lord.com/Home/MagnetoRheologicalMRFluid/Applications/MRMilitaryandDefenseApplications/MRDamper/tabid/4189/Default.aspx

A theoretcial equation for the magnetic flux density (B) inside a two pole Hallbach Array is (Flemming Buus Bendixen/Anette Norskov Shultz):

B=Br*log(Ro/Ri)
where Br is remanence of the magnet
Ro is outside radius and Ri is the inner radius of the magnet array.

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RE: Calculating Halbach Array force

(OP)
Well, I was kind of thinking of a non-cylinder halbach array, I did this quick inventor render. (note: Ironically enough, I think I put the arrays in the wrong direction...) So the springs would keep the magnets at repel-floating distance constantly, and when force is applied on the upper [transparent] part, the spring is first compressed, and then the magnets do their part.

I'm not sure if it would have any effect, but it would help if I could actually calculate how much [non-cylinder] halbach arrays repel!

So thanks for the suggestion Clyde, but it was a slight miss in the description there :p  

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