The OpenSees Community

Hello everyone, I watched some very useful videos on YouTube by Dr. Scott and, with the help of ChatGPT, tried to build all the subprojects in Visual Studio (Community version). This was done by installing Intel Fortran, ActiveTcl, and Python 3.12 (the Python version noted on the OpenSeesPy website)...

I would appreciate it if anyone could clarify this: In nDMaterial for PlateRebar, the reinforcement direction is controlled by "sita." You need to define the angle of the reinforcement layer, 90° (longitudinal) or 0° (transverse). Is this correct? It seems a bit odd that the reinforcement ...

Hello Everyone, The following data represents a very simple frame: it consists of 4 columns and 4 beams, with a diagonal stretching from one corner to another horizontally to approximate a diaphragm. The top 4 nodes are restrained against displacement in the Y-direction. When analyzing the frame for...

Hello Everyone, I have an 'ElasticPP' element assigned to two nodes that makes it perfectly vertical in the Z direction(X and Y coordinates the same but different Z values). I get "invalid orientation vector". There is another similar element that is not perfectly vertical and I don't get ...

Thank you for your response. Then the example must be working as it is. However, there is no unpacking asterisk. Since the same happens for fiber command where patch commands just follow and the python interpreter relates those based on the order of execution, I assumed the same style has been used ...

Hello Everyone, I was able to run the Pushover analysis example 5, Ex5, in Tcl. However, I couldn't run the example given in OpenSeesPy. Has anyone tried to run this example: https://openseespydoc.readthedocs.io/en/latest/src/cantuni2.html For Pattern command, part of the "Plain Pattern" s...

As far as I know OpenSees does not include optimization itself. However, it can be used with other python packages. I was wondering if anyone has code example or experience with using different optimization methods in python libraries to share here?

Thank you for your quick response and valuable information. After upgrading to the latest version of OpenSeesPy, it worked.

Hello Everyone, There is tcl viscous damper example provided by OpenSees at: https://opensees.berkeley.edu/wiki/index.php/Dynamic_Analyses_of_1-Story_Moment_Frame_with_Viscous_Dampers Using this code, I prepared a one bay model which is a chevron with one viscous damper mounted on one diagonal only....