The OpenSees Community

Hello, does anyone know how/where to find the documentation for an older version of OpenSees? The online documentation is about the latest version (3.4.0.7 as of today), but the version I'm using is older than that. Althogh I can read the change log to find what the differences are between the two v...

I was wondering if there is an OpenSeesPy command for creating the MPCO recorder? I couldn't find it on the OpenSeesPy wiki page but was hoping the documentation might lag implementation. I have created my model and analysis using OpenSeesPy. I wanted to use MPCO to output a database for post-proces...

Why do you think Mz and My are 5 and 6? https://portwooddigital.com/2022/11/04/simple-loads-on-a-cantilever/ Thank you very much for yuor reply and teaching me/us 'how to fish', professor. Just wanted to provide updates from my side in case that other people may find helpful. I figured this out by ...

I think there might be a bug in the sectionForce command. For dof=6 and dof=5, I'd expect to have Mz and My respectively. But it returns all 4 section forces. Please see the attached picture. Did anyone have the same problems before? Please correct me if I'm worng. Thank you. https://www.dropbox.com...

Hi there, I am using the Get_Rendering commands to make plot, and I am running analysis in Jupyter Notebook. According to the tutorial, I should get interactive plots that allow zoom, pan or download. The zoom and pan features are fine. However, if I click on the download button below the plot, the ...

If you are using a zerolength element, it means that you are introducing a flexible element (can be interpreted as a spring) between the two nodes of a zerolength element. Therefore, obviously those two nodes will have different values in the eigenvectors Thank you for your explanation. It's so cle...

Hi all, I've been thinking about two questions about zero-length element but couldn't find an answer myself. By any chance, could you show me some your insights? Thanks in advance! Q1: The zero-length element consists of two nodes (m dof at each node) at the same location, which seems to introduce o...

You ended up with a psedo time =2.0 for both loads applied. To correct this, you should make the first load constant and reset time to zero before applying the second load so that the second analysis will start from time 0. Hope this helps!