Magnetic Flux Density vs Magnet Geometry

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SUMMARY

The discussion centers on the comparison of magnetic flux density between two N48 neodymium magnets of equal volume (54 in²), specifically a rectangular magnet with a Br value of 4010 gauss and an arc magnet. Participants highlight the lack of available calculators for determining the magnetic flux density of arc magnets, emphasizing the need for additional parameters beyond volume, such as shape and relative permeability, to accurately calculate the B-field. The unit of measurement for the B-field is confirmed to be either gauss or tesla, underscoring the importance of geometry in magnetic field strength.

PREREQUISITES
  • Understanding of magnetic flux density and its measurement in gauss or tesla
  • Familiarity with N48 neodymium magnets and their properties
  • Knowledge of relative permeability and its role in magnetic calculations
  • Experience with magnetic field calculators and their input requirements
NEXT STEPS
  • Research the impact of magnet geometry on magnetic flux density calculations
  • Explore advanced magnetic field simulation software for arc magnets
  • Learn about the principles of magnetic permeability and its effects on B-field strength
  • Investigate available online tools for calculating magnetic flux density for various magnet shapes
USEFUL FOR

Engineers, physicists, and hobbyists involved in magnet design, magnetic field analysis, or anyone interested in the properties of neodymium magnets and their applications.

Neferkamichael
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2Magnets.jpg

Gentlemen, the the image shows 2 N48 neodymium magnets of the same volume 54 in2. On several website I can use magnetic flux density calculators to get the Br of the rectangular magnetic but haven't found one that calculates the value of the arc magnet. The Br value of the rectangular magnet is 4010 gauss. Is the gauss value of the arc magnet the same as the rectangular magnet? Any help would be greatly appreciated. Thanks
 
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I'm not sure what you mean by gauss value, and I think to have the answer to the B-field from these magnets, we need to know more than just their volumes.
 
The unit of measure of the B field is Gauss or tesla. With a flux density calculator you plug in the length, width, and thickness, plus the relative permeability of the material you are using and the value returned is in gauss or tesla, the magnitude of the b field. I can't find any free calculators that will calculate the magnitude of the b field of an arc magnet. I was wondering if anybody knows if the shape of the magnet is important in determining the magnitude of the b field or if 2 magnets of different shapes but the same volume would have the same magnitude.
 

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