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mhscott

I don't think the 'rigidDiaphragm' is doing what you want. Try using 'rigidLink -beam' instead.

https://portwooddigital.com/2023/04/02/ ... nto-a-bar/

mhscott

It's unclear if you are trying to get an external end force or an internal section force.

Try a simpler model, like a simple span in 3D.

mhscott

You will have to check the results yourself in order to answer that question

mhscott

I believe you need to add the -doRayleigh option to the zero length element command

mhscott

Did you use Transformation constraint handler?

mhscott

mhscott

The `ops_vis` module is now in its own package.

https://github.com/sewkokot/opsvis

mhscott

The modes dictate which directions get the target damping ratios. All the other modes get whatever according to the damping spectrum.

mhscott

That's coming from the eigenvalue solver (DSAUPD), not sure why though.

mhscott

No, but here's the list of accepted parameter strings:
https://github.com/OpenSees/OpenSees/bl ... .cpp#L1164

mhscott

If you have doubts, perform simple analyses and check reactions and other easily verifiable responses.

mhscott

That should work

mhscott

You can ignore that warning

mhscott

I didn't see that. You'll have to figure out what's going on. Start with simple models and build up from there.

mhscott

I see. Your model has no mass.

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