Dynamic analysis failure

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shiRo
Posts: 20
Joined: Thu Oct 12, 2023 8:55 am

Dynamic analysis failure

Post by shiRo » Wed Oct 18, 2023 1:23 pm

Desr STKO team
I am a beginner in STKO, in the last two weeks I have learned the basic skills of modeling and analysis using STKO, with the help of the STKO team I have successfully run my static analysis model, thank you again. Now I am trying to do a dynamic analysis of my model, according to the video material I replaced the loads with the original static model and changed the settings in the analysis steps, after many failures I still can't get the desired result, as the picture shows it can't be analyzed any more, so I would like to ask for some help from you guys, if you can help me to find out where the mistakes are and give me some suggestions to change them I would be grateful. I would be grateful if you could help me to find out what is wrong and suggest some modifications.
Regards
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Last edited by shiRo on Tue Oct 24, 2023 1:42 pm, edited 1 time in total.

STKO Team
Posts: 3069
Joined: Tue Oct 29, 2019 8:45 am

Re: Dynamic analysis failure

Post by STKO Team » Mon Oct 23, 2023 8:28 am

It's because you are using a partitioned mesh, but the analysis settings are wrong.
When your model is partitioned for parallel computing, you must use the Parallel Numberer + MUMPS.
Also use the same constraint handler in both analysis (why are you using Lagrange Multipliers in the dynamic analysis).

Last note:
I don't understand what are you trying to do with both the uniform excitation and ground motion. Read the OpenSees documentation about them to understand how to use them

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