morganj2003

So, I found an answer to my previous question about finding the force between perpendicular magnets, but I still have a problem. The following paper uses the variables t and g on the bottom left side of page 163: http://hal.archives-ouvertes.fr/docs.../PDF/OS5.1.pdf The t and g do not seem to be defined previously. I've looked into the possibility of t and g being some kind of common values used in magnetics, but my research hasn't turned up anything. Maybe you have some thoughts? Thanks, Jon

So, I found an answer to my previous question about finding the force between perpendicular magnets, but I still have a problem. The following paper uses the variables t and g on the bottom left side of page 163: http://hal.archives-ouvertes.fr/docs/00/42/23/19/PDF/OS5.1.pdf The t and g do not seem to be defined previously. I've looked into the possibility of t and g being some kind of common values used in magnetics, but my research hasn't turned up anything. Maybe you have some thoughts? Thanks, Jon

Inigo, I'm verifying a FEM analysis with an analytical analysis. This is common practice in FEA. In fact, a FEA without an analytical verification is not respected at all. ajb, Yes I considered, as I mentioned in my first post, the idea of using an electrostatic equivalent (making the permanent magnets into dipoles). This is not acceptable, though, as such an approach is not a sufficient approximation when magnets are so close to each other. No more ideas?

A load cell would work if I as trying to determine forces experimentally, but I need to determine the forces ANALYTICALLY.

The magnets are perpendicular in the following way: |- where the left magnet has poles S-N (from left to right) and the right magnet has poles N-S (from top to bottom). I am willing to assume that the magnets are sufficiently long into the page such that the end effects of the magnets are perhaps negligible. Thanks!

I'm desperately trying to verify a FEM analysis done on a system of two permanent magnets. I'm trying to analytically find the force between two large neodymium magnets spaced 1/8 inch apart. This problem would be easier if the magnets were oriented such that their magnetized planes were parallel with each other, but this analysis requires that the magnets be PERPENDICULAR to each other. Since the magnets are close to each other, considering the dimensions of the magnets themselves, I cannot make the magnets into dipoles. The question is, then: HOW DO I ANALYTICALLY (NO FEA OR ONLINE CALCULATORS) determine the force (normal and transverse) between these two perpendicular magnets? THANKS!