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For others' future reference: the answer is already provided here:

STKO Team wrote: ↑

Tue Jun 04, 2024 7:32 am

Yes some elements have the body force as input.
But not all of them, that's why in STKO we developed utilities such as VoulumeForce, FaceForce, EdgeForce... to provide for distributed forces where not available in OpenSees

Hello,

I am coming back to this post for clarification of the EdgeForce (and the rest) definition. Should the prescribed value be per meter of edge length, or the total/resultant for that edge?

Thanks,
Stavros

Hello,

on a similar topic, using STKO v4.0.0, I would like to extract the local (shear) force of a beam element. I am using "Force-Based beam-column" elements, with Standard Integration Types (Lobatto, 5GPs), with Elastic section. While I can visualise the local shear, I cannot extract the data in ...

Hello,

I am also facing the same issue with the mpco recorder missing from a custom-built OS version. I am using the latest (atm) stable OS release (v3.6.0, built Feb 15, 2024; https://opensees.berkeley.edu/). I am building the app for Win64 using VS: https://github.com/OpenSees/OpenSees/tree ...

Works great - thank you very much!

Stavros

I have tried the following but I cannot get the M/K matrices. I only get a matrix full of zeros if Transient is used as advised by Prof. Scott. This is what I am using in the custom command. What am I missing? Note that I have changed the OS solver to the version recently released, 3.6.0 (built 15/2 ...

Thanks! On top of that in the command reported above I had a typo in the transfType. That should be transType. So:

Hello,

coming back to this query, would you agree with the attached Analysis settings to derive the full stiffness matrix (K) from STKO? Then K is derived via this custom command: printA -print -file "K_matrix.txt"

AnalysesCommand_Kmatrix.jpg

If the settings above are correct, then to derive ...

Hello,

I cannot control the transformation type of an Elastic Timoshenko beam via Python.
So the following command highlighted in red doesn't return PDelta. Could you please guide me on how to get this?

xobj_el.getAttribute('transfType').String = 'PDelta'


def beam_element(i_beam, beam_w ...

I will try to clarify more. There is a cross-coupling term in the system that I want to analyze - please see the equations that I posted in my first message. These equations are derived for an object (e.g. a beam node/element) moving in a rotating frame, with a constant angular velocity omega.

I ...