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Mechanical free energy devices => mechanic => Topic started by: nwman on February 05, 2014, 10:03:04 PM

Title: Permanent magnet attraction force simulator?
Post by: nwman on February 05, 2014, 10:03:04 PM
Hello,


Question. I'm looking for a "simple" 2D simulation program (Preferable free or under $100) to work with virtual permanent magnets.


What I'm trying to achieve is:


Chart a graph of force vs. distance of attracting magnets. Or magnet and steel.


The ketch is I NEED to be able to adjust the following variables:


Rotation degree of the magnets to each other.
      I would like to be able to position two magnets in the simulator. One fixed position so it can not rotate or move. Then another that I can move and change it's
      rotation angle and have it stay at that angle no mater where I move it.


            Example: mag1 fixed with North straight up (Zero degrees). mag2 magnet with North fixed at 45 degrees clockwise.


Angle of attraction.
      Now that one is fixed and one can move, I want to be able to set the moving magnet along a path so it approaches the fixed one at a specific angle.


            Example: mag1 fixed in center of screen. mag2 follows a path of 45 degrees clockwise path to mag1(if up was zero degrees). Zero friction (or adjustable).



Distance and attraction strength.
      Obviously I then want to be able to set the distance along that path (with the given angles) and be able to measure the attraction strength at different
      distances.


            Example: As mag2 approaches mag1 I want to be able to read the attraction force along the 45 degree path.

Magnet details:
      Of course I would need to be able to specify the magnet shape and strength too.


Optionally:
      If I could make pulleys, gears, connectors, torque sensors, maybe gravity etc... that would be great too. Nothing too complex.








The back story:


The above is what I'm looking for but here is a little back story or detail of why I'm doing this. I just want to graph the field attraction strength given a variety of different angle combinations. I tried to build a setup to measure real life data but lets just say what I build wasn't precise enough. I have searched the posted for simulators and found a bunch but without spending a week reading through all of them to see if they can do the above I thought I would just ask if anyone could just point me in the right direction?


I appreciate any help! Thanks!


Tim

Title: Re: Permanent magnet attraction force simulator?
Post by: nwman on February 05, 2014, 10:08:43 PM
Here is a little better graphic.
Title: Re: Permanent magnet attraction force simulator?
Post by: Raccoon on March 29, 2014, 02:55:16 AM
I'm pretty sure you've seen about FEMM 4.2 : http://www.femm.info/wiki/Download
I think animations could be possibles with lua scripts, not sure.
There's a bunch of tutorials.
Even if I don't master all (only a few day of practice !), if you need ask !

For your situation, you'll probably need exact mathematicals comprehensions.
Also it seems you don't need animations at all, FEMM allow grouping and moving or rotating, it's a great program.
Title: Re: Permanent magnet attraction force simulator?
Post by: Raccoon on March 29, 2014, 03:35:26 AM
Here is a little simulation I've Made, not really accurate, you should play with : (see attachment)
http://s22.postimg.org/iuuz466k1/Capture.png
Title: Re: Permanent magnet attraction force simulator?
Post by: phaedrus on April 28, 2014, 10:36:23 AM
Tim,
    I too would like to know this.  Please let us know if you found a simulator to do what you were looking for.  And if you ended up looking through all those simulators you found posted at overunity, what did you discover about those (maybe you could post a short list here with comments for the rest of us)?  Thanks!