How to conduct reverse cycle analysis in OpenSees to get a hysteretic force-displacement graph?

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Shayan Dadashi
Posts: 4
Joined: Mon Sep 09, 2024 4:48 pm

How to conduct reverse cycle analysis in OpenSees to get a hysteretic force-displacement graph?

Post by Shayan Dadashi » Sun Sep 22, 2024 9:55 pm

Hello guys,
I would like to know what the issue is with my code (denoted as test) below. When I draw the force-displacement graph in Excel, I will get a linear graph.
I would like to know how I can analyze it with reverse cycle analysis so that the graph looks like a hysteretic one.
I am using reverse cycle analysis and also self-centering material, but still, I get a linear and elastic behavior through force-displacement graph in Excel.
bear in mind that the column should remain elastic, but the force-displacement graph has to be hysteretic.
Can anyone help me with this?
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kesavapraba
Posts: 468
Joined: Sat Mar 28, 2020 2:25 pm

Re: How to conduct reverse cycle analysis in OpenSees to get a hysteretic force-displacement graph?

Post by kesavapraba » Mon Sep 23, 2024 6:16 am

Hi, Please develop the same model in STKO and share it here. I will take a look at the model. It is time-consuming and challenging to go through the TCL script.
:: With best wishes ::
Prabakaran Kesavan

STKO Team
Posts: 3066
Joined: Tue Oct 29, 2019 8:45 am

Re: How to conduct reverse cycle analysis in OpenSees to get a hysteretic force-displacement graph?

Post by STKO Team » Mon Sep 23, 2024 8:16 am

We cannot debug your tcl file.
But if you look at the stress strain output of your zerolength elements you will see that some nonlinearity is activated.
Probably you are looking at wrong data
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