Which algorithm to use?

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AKSHAYNAIK
Posts: 6
Joined: Sat Sep 12, 2020 10:00 am

Which algorithm to use?

Post by AKSHAYNAIK » Tue Sep 22, 2020 11:17 am

Hi
I am doing a shear wall model in opensees. I dont understand when to use which algorithm. Need some suggestions on when to use which algorithm.

selimgunay
Posts: 883
Joined: Mon Sep 09, 2013 8:50 pm
Location: University of California, Berkeley

Re: Which algorithm to use?

Post by selimgunay » Tue Sep 22, 2020 11:29 am

Do you mean the nonnlinear solution algorithm?

AKSHAYNAIK
Posts: 6
Joined: Sat Sep 12, 2020 10:00 am

Re: Which algorithm to use?

Post by AKSHAYNAIK » Tue Sep 22, 2020 10:34 pm

selimgunay wrote:
Tue Sep 22, 2020 11:29 am
Do you mean the nonnlinear solution algorithm?
Yes.

selimgunay
Posts: 883
Joined: Mon Sep 09, 2013 8:50 pm
Location: University of California, Berkeley

Re: Which algorithm to use?

Post by selimgunay » Mon Oct 05, 2020 7:35 am

It depends on the level of nonlinearity. You can start with the regular Newton Raphson and try other methods if needed. This paper shows that starting with Newton with Line Search gives the best results in terms of convergence for highway bridges.

https://www.researchgate.net/profile/Kh ... alyses.pdf

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