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How to reduce the convergence error for nonlinear solver?

Posted Jan 18, 2024, 1:46 a.m. EST 1 Reply

Raja Kumar Acoustics & Vibration
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how can one minimize convergence errors in a nonlinear solver?

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iamrajakumar@iitkgp.ac.in
iamrajakr@gmail.com

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1 Reply Last Post Jan 18, 2024, 5:30 a.m. EST
Mark Harradine
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Posted: 10 months ago Jan 18, 2024, 5:30 a.m. EST

Looking at the plot you attached, I would say that you have a good set of results, there are very few iterations per step in that plot (often 1 or 2, occasioanlly 3 or 4). You may struggle to optimise it more... you could maybe increase step sizes to speed up solve time?

I am speaking from non-linear structural mechanics experience, but I would imagine the aims within an acoustics/vibration study are similar.

Looking at the plot you attached, I would say that you have a good set of results, there are very few iterations per step in that plot (often 1 or 2, occasioanlly 3 or 4). You may struggle to optimise it more... you could maybe increase step sizes to speed up solve time? I am speaking from non-linear structural mechanics experience, but I would imagine the aims within an acoustics/vibration study are similar.

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