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Error: Failed to find a solution. Divergence of the linear iterations. Returned solution is not converged.

Posted 25.10.2013, 05:50 GMT-4 Version 4.3a, Version 4.3b 1 Reply

Antonio Camarda
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Hi all,

i'm a new user of comsol
I'm trying to simulate a bonding wire inductor, but no way to make it converge.
cannot use 2D axysimmetric due to the shape of the inductor.

Tried all possible solutions:

1) direct solver: not enough memory
2) raised number of iterations
3) changed tolerance
4) changed mesh

The convergence plot stops at about 8th iteration and says
Error: Failed to find a solution.
Divergence of the linear iterations.
Returned solution is not converged.

I use only MF module
In DC (stationary) it works well. But this message pops up when i go in AC, even at extremely low frequencies.

Any idea?

Thank you in advance :-)

Antonio

1 Reply Last Post 14.02.2014, 13:44 GMT-5
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Hello Antonio Camarda

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S.Maan
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Posted: 1 decade ago 14.02.2014, 13:44 GMT-5
Hi

I got the same problem Did you find the solution. Please let me know. Thanks


Hi all,

i'm a new user of comsol
I'm trying to simulate a bonding wire inductor, but no way to make it converge.
cannot use 2D axysimmetric due to the shape of the inductor.

Tried all possible solutions:

1) direct solver: not enough memory
2) raised number of iterations
3) changed tolerance
4) changed mesh

The convergence plot stops at about 8th iteration and says
Error: Failed to find a solution.
Divergence of the linear iterations.
Returned solution is not converged.

I use only MF module
In DC (stationary) it works well. But this message pops up when i go in AC, even at extremely low frequencies.

Any idea?

Thank you in advance :-)

Antonio


Hi I got the same problem Did you find the solution. Please let me know. Thanks [QUOTE] Hi all, i'm a new user of comsol I'm trying to simulate a bonding wire inductor, but no way to make it converge. cannot use 2D axysimmetric due to the shape of the inductor. Tried all possible solutions: 1) direct solver: not enough memory 2) raised number of iterations 3) changed tolerance 4) changed mesh The convergence plot stops at about 8th iteration and says Error: Failed to find a solution. Divergence of the linear iterations. Returned solution is not converged. I use only MF module In DC (stationary) it works well. But this message pops up when i go in AC, even at extremely low frequencies. Any idea? Thank you in advance :-) Antonio [/QUOTE]

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