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Hysteresis Model 3D

Hello, I'm trying to simulate a Degaussing-process. For that I need to model a Hysteresis-curve, but so far, I havent been able to do so. I've been looking for examples, that model Hysteresis Curves in...

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Re: Hysteresis Model 3D

So, now I've tried to rebuild a 2D-Model i've found in 3D, to see if the PDEs still work, but I always get the Error Message: "Failed to find consistent Initial Values". I have attached both the 2D and...

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Re: Hysteresis Model 3D

Hi Rook, I just loaded "hysterese_example.mph" into versions 4.3.2.189 and 4.4.0.195 and it works for me right away. See picture. I'am running Comsol on Linux. Your PDE is simply f=0, right? Maybe you...

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Re: Hysteresis Model 3D

Hi Jens, hysterese_example.mph is a model I found in another Dicussion here, so of course it works ;) My Problem is, that I have to build my model in 3D, but if I do so, I get error Messages or the...

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Re: Hysteresis Model 3D

Hi Rook, there are still some issue but I got running for ~75 time steps now: Main points: + when using the direct solver you need "Gauge Fixing for A-field" under the mf-node + for transient...

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Re: Hysteresis Model 3D

Hi Jens, Thank you so much for your help! It's still not perfect, but It basically works now :) I attached the Hysteresis Curve I produced :) Regards Rook

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Re: Hysteresis Model 3D

So, now I've run into a new Problem. Since the Model I actually want to study doesn't have a Zylindrical symmetry, it doesn't really make sense to use zylindrical Coordinates like in...

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Re: Hysteresis Model 3D

Hi it is working for me, but convergence is slow. The time steps are so small that the progess meter stays at 0% for a very long (wall clock) time. But if I look at the log-window I see progress....

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Re: Hysteresis Model 3D

Hi That's exactly whats confusing me. Why does the Model with the cartesian Coordinates take such a long time, while the Model with the zylindric Coordinates is done in half a day? Is this normal, or...

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Re: Hysteresis Model 3D

Hi Rook, I have the same problem with 3D cartesian model with magnetic hysteresis effect. Did you reach any success on your convergency issue? Regards, Parnia

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Re: Hysteresis Model 3D

Hi Parnia, unfortunately, I did not have any succes so far. By now im pretty sure, that there is somthing wrong with my equations. I have actually also tried different variations of the JA-Model, but...

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