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my question is how to model a rotational spring at joint center (the intersection of beam and column elements) with rigid offset?

while zerolength element requires two nodes as input arguments,
for exterior joint there are 5 nodes and for interior there are 6 nodes

how to connect the zerolength elements to those nodes and,
what are the nodes and corresponding dof to be fixed?

my question is how to model a rotational spring at joint center (the intersection of beam and column elements) with rigid offset?

while zerolength element requires two nodes as input arguments,
for exterior joint there are 5 nodes and for interior there are 6 nodes

how to connect the zerolength elements to those nodes and,
what are the nodes and corresponding dof to be fixed?

Dear opensees user/developer

I have a problem when defining beamclumn joint element in a 3D problem for dynamic analysis..

First, how to model interior or even exterior joint in 3D, I know load is transferred only in plane, so, does that mean I have to model two joint element for each connection, one in XZ and one in YZ plane? this means I will model the element twice..

How to connect other beams perpendicular to joint plane?

Then, I encountered some issues when defining the bar-slip material such as the str parameter of "damag1" or "damage2" instead of "damage"

,and the number of parameters included in the bar-slip material to be either 13 or 15 . . .

I searched about any example for modeling joint in 3d, but nothing..

there is a single example that written in tcl to model joint in 2D, and apply static loads, but even this example is not up-to-date, and suffer some issues

any recommendations?

I need a script containing a fragility analysis in openseespy
thnks

opensees cloud

Hello
I am performing gravity analysis on a 3D system and I need to perform M-C analysis for RC section in the same model (same script), but I could not since main model has 6 dimensions and section analysis problem has 3D
is it possible to perform M-C analysis for RC section for a problem in the same script?

Ziad wrote: ↑Fri Oct 13, 2023 7:21 am
import vfo.vfo as vfo

Dear Ziad
I am trying importing Vfo in jupyter, but it gives ne error:
Do you have advice on how to import it succesfully?

the error is:
ValueError: Invalid Jupyter notebook plotting backend "panel".
Use one of the following:
"static", "client", "server", "trame", "none"

Hello community
How to contribute to the Openseespy documentation in the example sections?