Here's an example. Dave. emacoustics wrote: > Hello folks, > > I'm kind of new to using FEMM, and am trying to model a loudspeaker > coil/magnet assembly for my final year university project. I'm > modelling to observe the effect the flux generated by the coil has on > the permanent magnetic field. The model is really simple - one block > of steel, one block of Neodinium, and one (and sometimes two) coils > (which are represented by square blocks at present, though may get > changed to circles) in the gap between them. My problem is in not > understanding how to input data for magnets - I modelled the system > with no current in the coil (and with no coil at all) expecting to > see field lines between the neodinium and the steel, and saw > nothing. When looking at material properties, there are lots of > values for constants I don't understand, nor did I really understand > the manual either. Can anybody point me in the right direction? The > model is just to show that the coil affects the permanent field when > a current runs through it, and by adding a seconc coil in antiphase > this can reduce this problem. > > Many many thanks, I'm getting desperate! > > Best Wishes, > > Mike Wheeler > Final Year Undergraduate, BEng Mechanical Engineering > Imperial College, London > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
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