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Re: Analysis did not converge
Posted: Tue Mar 19, 2024 2:41 pm
by Gabriele.Neri
Sorry I can't understand, which is the previous post you're talking about?
With the Standard Integration method I can consider plastic hinges with finite length at the ends of beam and column elements?
Thanks in advance
Re: Analysis did not converge
Posted: Tue Mar 19, 2024 2:48 pm
by kesavapraba
By previous post, I referred to the option, where you can model the beam-column element with distributed plasticity approach using StandardIntegration option. Here, the nonlinear response is not limited over the finite plastic length.
With the Standard Integration method I can consider plastic hinges with finite length at the ends of beam and column elements?
No, you should use hinge option in this case.
Re: Analysis did not converge
Posted: Mon Apr 29, 2024 8:16 am
by STKO Team
Just a side note:
When you use the Hinge integration scheme you can also apply the nonlinear section in the middle. The advantage of using the Hinge integration scheme is to be able to directly input the plastic hinge length.
Instead with the Lobatto scheme you can't.
This is relevant if you are using strain-softening materials (like concrete) as the amount of dissipated energy in force-based elements are related to the size of the gauss points.
It's a long topic to explain here but you can find references online.
We gave a webinar about this topic here (
https://asdea.eu/software/university-courses/) OpenSees Support Group