ISSUE RIGID DIAPHRAGM MASONRY SHELL

[mmc]

Dear forum members,

I am modelling masonry arcades using shell elements. I have used a rigid diaphragm constraint to simulate the effect of the roof on top of the arcades being rigid. I have constrained the master node by locking Uz, Rx and Ry. After that, I set up the modal analysis steps, requesting 6 modes of vibration.

However, when I submit the analysis, a warning message appears indicating that 'MumpsParallelSolver::solve(void) - Error -3 returned in substitution dmumps()'. However, the results I obtained only show one local mode, which does not make sense. I have tried other solvers and elastic-plastic materials, and either the analysis does not run or the results are incorrect.

I would be grateful if someone could point out where the error is. Please find attached a simplified version of the model that I am trying to run.

I look forward to receiving your feedback and thank you in advance.

[STKO Team]

I don't see any error, try to update your opensees and/or STKO.

modes_mason.png (264.79 KiB) Viewed 555 times

[mmc]

Hi STKO Team,

Thanks for answering so fast.

Thats weird. When I run the analysis, I get the Mumps error and the analysis continues until I get the results. However, as you can see in the screenshot, there is definetly a problem with the solver. Also, the period is super high.

I have STKO 4.1.0 and Opensees 3.7.2 downloaded from prof Nicola Tarque's.

[STKO Team]

That's weird... I tested it with those exect versions and it works fine on my side.
1) Make sure to you have the correct latest versions: just re-download them to be sure
2) maker sure the file you sent here to the forum is the one you are testing

[mmc]

I have reinstalled both STKO and OpenSees using the 3.7.2 file from here: https://www.researchgate.net/publicatio ... ltext=true.
I have run the same file uploaded.
I get the same results...
I am not sure what it might be happening here.
I run the file from here using shell elements and rigid diap and I dont have any problems: viewtopic.php?p=10658&hilit=rigid+diaf#p10658
I have changed the element property from ASDShellT3 to ShellNLDKGT and I get your moral shapes.

[STKO Team]

I just tested with those exact versions and I don't see any problem

[mmc]

Sorry, I have tried to run the model in 3 different computers and it does not run correctly. We have checked that both STKO and OpenSees are updated.

[STKO Team]

But from the output of your commandline it seems you are running an eigenvalue analysis with more than 1 processor.
Is it true?
In that case, OpenSees eigen command can only run with 1 processor

[mmc]

The model (uploaded at the beginning of this thread) has one partition. I run the analysis with openseesmp. I havent had problems with this. Actually, if I change the type of element to ShellDKGT (for example), the model works.