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CQC - Error
Posted: Mon Oct 11, 2021 7:24 am
by Geo82
Hi all,
I am trying to implement the CQC from the responseSpectrum routine but smth is wrong and the results are too big in magnitude. I am trying to fogure out what I am doing wrong, any ideas will be appreciated.
Re: CQC - Error
Posted: Mon Oct 11, 2021 7:55 am
by STKO Team
Can you attach your Tcl files (Zipped) ?
Re: CQC - Error
Posted: Mon Oct 11, 2021 7:58 am
by Geo82
zip file attached
Re: CQC - Error
Posted: Mon Oct 11, 2021 8:59 am
by STKO Team
Here's the modified file.
You were combining only the 3rd column.
Now I set up a script that combines all components.
Then it creates a Nx12 matrix (stored in a file) where N is the number of elements, with the CQC-combined forces.
Re: CQC - Error
Posted: Mon Oct 11, 2021 11:25 am
by Geo82
it works really great!
Re: CQC - Error
Posted: Mon Oct 11, 2021 3:41 pm
by Geo82
I am getting an error for a simple portal frame..
Re: CQC - Error
Posted: Mon Oct 11, 2021 3:47 pm
by Geo82
portalFrame test
Re: CQC - Error
Posted: Mon Oct 11, 2021 4:33 pm
by STKO Team
It was just a round-off error before computing the square root.
It can happen when a mode is not excited in the requested direction.
Now I added a small check to handle this rare round-off errors