The OpenSees Community

If your model is not large (2D soil column), you won't see much time difference with any of the solvers.

A better workaround is to cast the numeric values as strings in Python. It is only a problem for numeric values that come after 'section', 'material',or 'fiber'. Not a problem with node recorders as you pointed out.

ops.recorder('Element','-ele',1,'section',str(5),...)

There isn't a recorder option for the fiber locations and areas, but there could be. Can you create an "issue" at the OpenSees GitHub page?

https://github.com/OpenSees/OpenSees/issues

I found the issue and checked it into GitHub:

https://github.com/OpenSees/OpenSees/pull/371

Should be in the next pip upgrade, but I will also need to fix some of the -GJ code, so stay tuned.

Thanks for sharing your code. I also get a segmentation fault for the fiber command in the 3D model. It's probably an input parsing error. I will check it out.

Michael

There's not an easy way to get the section geometry from a fiber section. You can get the fiber locations and areas and make your best guess from there.

I think the recorders have less overhead than the output commands, but I haven't quantified it.

This script works, but only if the Tcl file defines everything line by line, i.e., without loops, conditional statements, or variable substitutions.

https://github.com/OpenSees/OpenSees/bl ... nSeesPy.py

You end up with two loads applied and after two time steps with linear time series, you get four times the displacement. You will need to use 'Constant' time series for gravity loads. Or 'Linear' time series but you have to reset the time to zero before you apply time varying loads.

Issue resolved here:

https://github.com/zhuminjie/OpenSeesPyDoc/issues/188

Do you have the same issue with the Tcl version of OpenSees? I ask because it could be a problem with the inputs or with the material implementation, e.g., revertToStart. Generally, we need more information than what you provided.

Can you provide a more complete minimum working example? The code you posted does not define any materials.

Good point. I enabled BBcode, so now you should be able to use delimiters around your Python code

app.php/help/bbcode#f2r1

For example:

Thanks for sharing the example!

Please try posting again with BBcode.

To get the matrices M, C, and K, read this: https://wp.me/pbejzW-FH

Also, you need to use the -file option, 'printA -file 2.txt'