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Look at the new ASDSteel1D we just developed.
We have a webinar (the last one), and the documentation is here:
https://opensees.github.io/OpenSeesDocumentation/user/manual/material/uniaxialMaterials/ASDSteel1D.html

Thank you for replying! When I test this constitutive model, a problem appeared ...

Hi,everyone.

I’ve been working on simulating uniaxial tensile tests of rebar using STKO, and I’m currently using the reinforcing steel material model to capture its tensile behavior. However, I’ve noticed that the softening part of this model isn’t pronounced enough, and it doesn’t really represent ...

STKO Team wrote: ↑

Mon Dec 09, 2024 2:55 pm

Did you read the error message (the bold red one)?

yeah, I understand it literally，but I don't know how to fix it.








ok，I finally find out what's wrong, sorry for bothering.

Hi, everyone.
I'm trying to use STKO to simulate a pull-out test of a grouting sleeve, and I had built a simple model, but ran into some issues.
1.png
1. The following issue occurs when running,I don't actually know why this happen.
2.png
2.The model is mainly composed of a sleeve, grout and ...

Hi, This is strange! It doesn't happen generally. It is challending to suggest anything with limited details. Have you loaded and kept the mpco database in a default settings?

Sorry, I don't get you. I haven't changed the settings of the MPCO database file.
Could you please tell me about how to ...

Hi STKO team. When I was looking at the component stresses in the post-processing interface, I noticed that I couldn't select and display the related properties separately, which was not an issue before. What is the cause and how can I fix this?
Looking forward to hearing from you.

You are on the right path, but there are some mistakes that the ASDConcrete3D tries to fix during runtime, that's why you don't see the expected results.

Make sure that at least the second_point - first_point (sigma-epsilon) of your curve gives the Young's modulus.
(sigma(1) - sigma(0)) / (eps(1 ...

Thank you so much for the reply!
There is an uniaxial material named ECC01 in STKO, and I got the cyclic performance of ECC in the materials test interface as shown in picture by entering the relevant parameters. I verified the correctness of this constitution with a simple uniaxial model.
1.png ...

Hi,STKO team.
I was recently working on a push-over simulation of a reinforced concrete column with an ECC jacket. The ECC jacket was simulated with ASDConcrete3D user-define constitutive. And here are some issues I have met.
1.How does ASDConcrete3D user-defined specifically consider material ...