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Permanent magnet_Failed to find a solution-Reg

Posted Jan 24, 2024, 12:12 p.m. EST Materials, Modeling Tools & Definitions, Physics Interfaces 4 Replies

Sambasivarao Kambala Non-destructive testing
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Hello all, This is Siva. Recently started COMOL (6.0 version) for 2D modelling of the permanent magnet field distributions inside the ferrites and magnetic materials. I was able to define : 1. Geometry 2. Materials (air, soft iron) 3. Physics (magnetic fields, no currents) 4. Mesh well 5. While computing the model I got the following error The relative error (0.018) is greater than the relative tolerance. There was a warning message from the linear solver. Iterative refinement triggered. Returned solution is not converged. Not all parameter steps returned.

I tried all possible ways but i couldn't succeed. I have attached the model. Kindly help me the same. Looking forward to your kind reply.

Thanks & Regards, Siva

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4 Replies Last Post Jan 25, 2024, 9:41 a.m. EST
Edgar J. Kaiser Certified Consultant
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Posted: 9 months ago Jan 24, 2024, 12:31 p.m. EST

Hi Siva,

assign a Zero Magnetic Scalar Potential BC to one of the points in your model and it will converge.

Cheers Edgar

-------------------
Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Hi Siva, assign a Zero Magnetic Scalar Potential BC to one of the points in your model and it will converge. Cheers Edgar
Sambasivarao Kambala Non-destructive testing
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Posted: 9 months ago Jan 24, 2024, 1:12 p.m. EST

Hi Edgar J. Kaiser, Thanks for your quick reply and suggestion.

**Is it under magnetic field, no currents --> initial values? If the above one is correct, then in my model it is 0 only. **

Otherwise please let me know where to change these values. Looking forward to your kind reply.

Thanks & Regards, Siva

Hi Edgar J. Kaiser, Thanks for your quick reply and suggestion. **Is it under magnetic field, no currents --> initial values? If the above one is correct, then in my model it is 0 only. ** Otherwise please let me know where to change these values. Looking forward to your kind reply. Thanks & Regards, Siva
Edgar J. Kaiser Certified Consultant
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Posted: 9 months ago Jan 24, 2024, 1:26 p.m. EST

You must add an additional BC. You find it under the 'Points' BCs.

-------------------
Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
You must add an additional BC. You find it under the 'Points' BCs.
Sambasivarao Kambala Non-destructive testing
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Posted: 9 months ago Jan 25, 2024, 9:41 a.m. EST

Thank you very much Edgar J. Kaiser for your kind suggestions. Its working now.

Thank you very much Edgar J. Kaiser for your kind suggestions. Its working now.

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